The Following List Contains the Material Safety Data Sheets You Requested

Home , TNT

The following list contains the Material Safety Data Sheets you requested. Please scoll down to view the requested MSDS(s).

Product MSDS Distributor Format Language Quantity

2925100 TNT843A Hach Company ROWGHS English 1 2925100 TNT843B Hach Company ROWGHS English 1 2925100 TNT843C Hach Company ROWGHS English 1 2925100 TNT843R Hach Company ROWGHS English 1 2925100 TNT839A Hach Company ROWGHS English 1 2925100 TNT839R Hach Company ROWGHS English 1 2925100 TNT835A Hach Company ROWGHS English 1 2925100 TNT835R Hach Company ROWGHS English 1 2925100 TNT831A Hach Company ROWGHS English 1 2925100 TNT831R Hach Company ROWGHS English 1 2925100 TNT826A Hach Company ROWGHS English 1 2925100 TNT826B Hach C ompany ROWGHS English 1 2925100 TNT826C Hach Company ROWGHS English 1 2925100 TNT826D Hach Company ROWGHS English 1 2925100 TNT826R Hach Company ROWGHS English 1 ______Total Enclosures: 15 World Headquarters Hach Company P.O.Box 389 MSDS No: M02444 Loveland, CO USA 80539 (970) 669 -3050 SAFETY DATA SHEET

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Phosphorus LR TNT Reagent A Catalog Number: TNT843A

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medica l and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M02444 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Acute Toxicity: Acute Tox. 4 -Orl Respiratory or Skin Sensitization: Skin Sens.1 Respiratory or Skin Sensitization: Resp. Sens.1 Serious Eye Damage/Eye Irritation: Eye Irrit. 2A Specific Target Organ Toxicity - Single Exposure: STOT SE 3 Specific Tar get Organ Toxicity - Single Exposure: STOT SE 2 GHS Label Elements: DANGER

Hazard statements: Harmful if swallowed. Causes skin irritation. May cause an allergic skin reaction . Causes serious eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause respiratory irritation. Precautionary statements: Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF INHALED: I f breathing is difficult, remove victim/person to fresh air and keep at rest in a position comfortable for breathing. If skin irritation or rash occurs: Get medical advice/attention. If eye irritation persists: Get medical advice/attention. If experienc ing respiratory symptoms: Call a POISON CENTER or doctor/physician. Wear protective gloves / protective clothing / eye protection / face protection. HMIS: Health: 2 Flammability: 0 Reactivity: 2 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 2 Flammability: 0 Reactivity: 2 Symbol: None WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Sodium Persulfate

CAS Number: 7775 -27 -1 Chemical Formula: Na 2 S 2O8 GHS Classification: Ox. Sol. 3, H272; Acute Tox. 4 -Orl, H302; Eye Irrit. 2A, H319; STOT Single 3, H335; Skin Irrit. 2, H315; Resp. Sens. 1, H334; Skin Sens. 1, H317 Percent Range (Trade Secret): 65.0 - 75.0 Percent Range Units: weight / weight PEL: Not established TLV: 0. 1 mg/m 3

WHMIS Symbols: OxidizingOther Toxic Effects Sodium Metaborate

CAS Number: 7775 -19 -1 . Chemical Formula: BHO 2 Na GHS Classification: Skin Irrit. 2 H315; Eye Irrit. 2 H319; STOT SE 3 H335; Repr. 2, H361 Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 15 mg/M 3 Total Dust; 5 mg/M 3 Respirable Dust TLV: 10 mg/M 3 Inhalable Particles; 3 mg/M 3 Respirable Particles

WHMIS Symbols: Other Toxic Effects Lithium Sulfate

CAS Number: 10377 -48 -7 Chemical Formul a: Li2SO4 H2O GHS Classification: Acute Tox. 4 -Orl, H302; Skin Irrit. 2, H315; Eye Irrit. 2A, H319; Repr. 2, H361; Lact. H362; STOT Single 2, H371 Percent Range (Trade Secret): 1.0 - 10.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Contains oxidizer. Contact with combustible materials may cause a fire. During a fire, corrosive and toxic gases may be generated by thermal decomposition. During a fire, corrosive and toxic gases may be generated by thermal decomposition. Material is not classified as flammable according to GHS criteria. Fire Fighting Instruction: Evacuate area and fight fire from a safe distance. As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Med ia: Use media appropriate to surrounding fire conditions Water. Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported May react violently with: strong reducers combustible materials Hazardous Combustion Products: Toxic fumes of: sulfur oxides. boron compounds ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Stop spilled material from being released to the environment. Cover spilled solid material with sand or other inert material. Clean -up Technique: If permitted by regulation, Remove all combustible materials from the spill area. Sweep up material. Work in an approved fume hood. W orking in small batches, dilute with excess water. Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Filter to remove solids. Flush the spilled material to the drain with a large excess of water. Otherwise, Decontaminate the are a of the spill with a soap solution. Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate general area (50 foot radius or as directed by your facility's emergency response plan) when: a pound or m ore of loose powder is spilled. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: Not applicable ______7. HANDLING AND STORAGE

Han dling: Maintain general industrial hygiene practices when using this product. Avoid contact with eyes skin clothing Wash thoroughly after handling. Storage: Store away from: combustible materials Keep away from: reducers oxidizable materials Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Use a fume hood to avoid exposure to dust, mist or vapor. Use genera l ventilation to minimize exposure to mist, vapor or dust. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protection: laboratory fume hood adequate ventilation Precautionary Measures: Keep away from: oxidizable materials reducers Protect from: heat moisture TLV: 10 mg/m 3 Inhalable particles; 3 mg/m 3 Respirable Particles PEL: Not established. 10 mg/M 3 Total Dust; 3 mg/M 3 Respirable Fraction. For Occupational Exposure Limits (OEL) for ingred ients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: White powder Physical State: Powder Molecular Weight: Not applicable Odor: None Odor Threshold: Not applicable pH: Solution pH = 1.5 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): > 2.0 calculated Viscosity: Not determined Solubility: Water: Soluble Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: Not applicable Vapor Density (air = 1): Not applicable Evaporation Rate (water = 1 ): Not applicable Volatile Organic Compounds Content: Not applicable Flammable Properties: Contains oxidizer. Contact with combustible materials may cause a fire. During a fire, corrosive and toxic gases may be generated by thermal decomposition. D uring a fire, corrosive and toxic gases may be generated by thermal decomposition. Material is not classified as flammable according to GHS criteria. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not determined Upper Explosion Limits: Not determined Autoignition Temperature: Not determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Prop erties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: May react violently i n contact with: oxidizable material reducers Incompatible with: aluminum reducers Hazardous Decomposition: Heating to decomposition releases toxic and/or corrosive fumes of: sodium oxides sulfur oxides Conditions to Avoid: Exposure to air. Heating to decomposition. Excess moisture ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologicall y Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data Route Data Given Below ATE Oral Rat LD50 = 993 mg/kg/bw Specific Target Organ Toxicity - Single Exposure (STOT -SE): Target Organs Respiratory Tract Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Irritating to skin. Eye Damage: Irritating to eyes. Sensitization: Contains a sensitizing compound. Skin Sensitizer Respiratory Sensitizer Sodium Persulfate (71%) CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Developmental toxicity associated with the substa nce or an ingredient of the mixture have been reported. Sodium Metaborate (21.4%); Lithium Sulfate (7.1%) This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does N OT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: Harmful May cause: gastrointestinal tract irritation nausea vomiting diarrhea muscular twitching lethargy circulatory disturbances central nervous system effects kidney dam age harm to unborn child, shock Inhalation: May cause: allergic respiratory reaction Causes: respiratory tract irritation Skin Absorption: Will be absorbed through abraded or broken skin. Effects similar to those of ingestion Chronic Effects: Chronic overexposure may cause allergic skin reactions allergic respiratory reactions weight loss anemia Medical Conditions Aggravated: Pre -existing: Eye conditions Skin conditions Respiratory conditions Allergies or sensitiv ity to potassium persulfate. ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data avai lable Based on classification principles, not classified as hazardous to the environment. Ingredient Ecological Information: Lithium Sulfate: 24 hr Daphnia magna EC50 = 196.79 mg/L. Sodium Persulfate: 48 hr Daphnia magna EC50 = 64.6 mg/L. Sodium per sulfate: Dapnia magna 48hr LC50 = 64.6 mg/l CEPA Categorization: Sodium persulfate: Persistent, not bioaccumulative or inherently toxic to aquatic organisms. CEPA Statement: Sodium peroxidisulfate, Sodium metaborat: Persistent, not bioaccumulative or inherently toxic to aquatic organisms; Lithium sulfate: Persistent, inherently toxic to aquatic organisms (PiT). ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Dilute material with excess water making a weaker than 5% solution. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, s lowly pour the material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Work in an approved fume hood. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. Rinsate from empty containers may contain sufficient product to require disposal as hazardous waste. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Ple ase consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the cou ntry -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated Hazard C lass: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Ship ping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title I II Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicab le Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -199 3. American Conference of Governmental Industrial Hygienists, 1992. NIOSH Registry of Toxic Effects of Chemical Substances, 1985 -86. Cincinnati: U.S. Department of Health and Human Services, April, 1987. The Merck Index, 11th Ed. Rahway, New Jersey: Merck and Co., Inc., 1989. Vendor Information. Sax, N. Irving and Richard J. Lewis, Sr., revised by. Hawley's Condensed Chemical Dictionary, Eleventh Ed. New York: Van Nostrand Reinhold Co., 1987. Technical Judgment. Gosselin, R. E. et al. Clinica l Toxicology of Commercial Products, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. In -house information. List of Dangerous Sub stances Classified in Annex I of the EEC Directive (67/548) - Classification, Packaging and Labeling of Dangerous Substances, Amended July 1992. Technical Judgment. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 23 32 -2983. Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Association, 1991. TLV's Threshold Limit Values and Biolo gical Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. CCINFO MSDS/FTSS. Canadian Centre for Oc cupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Complete Text of H phras es referred to in Section 3: H302 Harmful if swallowed. H315 Causes skin irritation. H317 May cause an allergic skin reaction. H319 Causes serious eye irritation. H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled. H335 M ay cause respiratory irritation. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 14 Month: March Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in a ccordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Phosphorus LR TNT Reagent B Catal og Number: TNT843B

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M02456 Chemical Name: Not applicable CAS Number: Not Applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Orthophosphate Determination ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Corrosive to Metals: Met. Corr. 1 Skin Corrosion/Irritation: Skin Corr. 1A GHS Label Elements: DANGER

Hazard statements: May be corrosive to metals. Causes severe skin burns and eye damage. Precautionary statements: Wear eye protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Re move/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor /physician. HMIS: Health: 3 Flammability: 0 Reactivity: 1 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 0 Reactivity: 1 Symbol: Not applicable WHMIS Hazard Classification: Class E - Corrosive material WHMIS Symbols: Corrosive ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Sulfuric acid

CAS Number: 7664 -93 -9 Chemical Formula: H2SO 4 GHS Classification: Met. Corr. 1 H290; Skin Corr. 1A, H314; Aquatic Acute 3, H402 Percent Range (Trade Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: 1 mg/m 3 TLV: 1 mg/m 3

WHMIS Symbols: Acute Pois onCorrosive Sulfamic Acid

CAS Number: 5329 -14 -6 Chemical Formula: H3NO 3S GHS Classification: Met. Corr .1, H290; Acute Tox. 5, H302; Eye Irrit. 2, H319; Skin Irrit. 2, H315; Aquatic Chronic 3, H412 Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Corrosive Ammonium Molybdate

CAS Number: 12027 -67 -7 . Chemical Formula: (NH 4)6Mo 7O24 4 H 2O GHS Classification: Acute Tox. 4, H302; Eye irrit. 2, H319; Skin Irrit. 2, H315; STOT SE 3, H335STOT SE 2, H371; Aquatic Acute 3, H402 Percent Range (Trade Secret): 0.5 - 3.0 Percent Range Units: weight / volume PEL: 5 mg/m³ as Mo TLV: 5 mg/m³ as Mo

WHMIS Symbols: Acute Poison Potassium Antimonyl Tartrate

CAS Number: 11071 -15 -1 . Chemical Formula: C8H4K2O12 Sb 2 3H 2O GHS Classification: Acute Tox. 3 -Orl, H301; Muta 2, H341; Carc. 2, H351; STOT SE 1, H370; STOT RE 1, H372; Aq. Chron. 3, H412 Percent Range (Trade Secret): < 0.1 Percent Range Units: weight / volume PEL: 0.5 mg/m³ (as Sb) TLV: 0.5 mg/m³ (as Sb)

WHMIS Symbols: Acute Poison Tartaric Acid

CAS Number: 87 -69 -4 Chemical Formula: C4H6O6 GHS Classification: Skin Irrit. 2, H315; Eye Dam. 1, H318; STOT Single 3, H335 Percent Range (Trade Secret): < 0.1 Percent Range Units: weight / volume PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Corrosive Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 75.0 - 85.0 Percent Range Units: volume / volu me PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Not F lammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may be generated by thermal decomposition. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -deman d and full protective gear. Extinguishing Media: Dry chemical. Carbon dioxide Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: Contact with metals gives off hydrogen gas which is flammable May react violently with: strong bases water Hazardous Combustion Products: Toxic fumes of: sulfur oxides. Hydrogen Sulfide ammonia ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Se ction 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Absorb spilled liquid with non -rea ctive sorbent material. Stop spilled material from being released to the environment. Dike large spills to keep spilled material from entering sewage and drainage systems or bodies of water. Clean -up Technique: If permitted by regulation, Cover spil led material with an alkali, such as soda ash or sodium bicarbonate. Scoop up slurry into a large beaker. Adjust to a pH between 6 and 9. Use sulfuric or citric acid to lower pH. Use soda ash or sodium bicarbonate to increase pH. Flush reacted material to the drain with a large excess of water. Otherwise, Decontaminate the area of the spill with a soap solution. Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate local area (15 foot radius or as directed by your facility's emergency response plan) when: any quantity is spilled. DOT Emergency Response Guide Number: 154 ______7. HANDLING AND STORAGE

Handling: Avoid c ontact with eyes skin clothing Do not breathe mist or vapors. Wash thoroughly after handling. Use with adequate ventilation. Maintain general industrial hygiene practices when using this product. Storage: Keep away from: alkalies oxidizers re ducers metals Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION Engineering Controls: Use general ventilation to minimize exposure to mist, vapor or dust. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: chemical splash goggles Skin Protection: lab coat dispos able latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin c lothing Do not breathe: mist/vapor Wash thoroughly after handling. Use with adequate ventilation. Keep away from: alkalies reducers oxidizers metals TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredi ents, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Colorless Physical State: Liquid Molecular Weight: Not app licable Odor: Odorless Odor Threshold: Odorless pH: < 1 Metal Corrosivity: Corrosivity Classification: Classified as corrosive to metals. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1) : 1.11 g/cm 3 Viscosity: Not determined Solubility: Water: Miscible Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not applicable Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: < 20 hPa @ 20 ºC Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: Non e intentionally added Flammable Properties: Not Flammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may be generated by thermal decomposition. Flash Point: Not determined Method: Not dete rmined Flammability Limits: Lower Explosion Limits: Not determined Upper Explosion Limits: Not determined Autoignition Temperature: Not determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported St atic Discharge: None reported. Reactivity / Incompatibility: May react violently in contact with: acetic acid caustics chlorosulfonic acid oxidizers reducers Incompatible with: metals Hazardous Decomposition: Contact with metals may release flammable hydrogen gas. Heating to decomposition releases toxic and/or corrosive fumes of: sulfur oxides Conditions to Avoid: Extreme temperatures Heating to decomposition. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Based on classification principles, the classification crit eria are not met. Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data Route Data Given Below ATE Oral Rat LD50 = 8346 mg/kg/bw ATE Inhalation Rat LC50 = 627 mg/L/4 hr Specific Target Organ Toxicity - Single Exposure (STOT -SE) : Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Cor rosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Data insufficient for classif ication An ingredient of this mixture is: IARC Group 1: Recognized Carcinogen Sulfuric Acid - The IARC evaluation was based on exposure to the mist or vapor of concentrated sulfuric acid generated during chemical processes. An ingredient o f this mixture is: NTP Listed Group 1: Recognized Carcinogen Sulfuric Acid Mist or Vapor This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: Causes: severe burns May cause: circulatory disturban ces rapid pulse and respirations diarrhea nausea vomiting Inhalation: Causes: severe burns May cause: difficult breathing mouth soreness teeth erosion Skin Absorption: None Reported Chronic Effects: Chronic overexposure may cause eros ion of the teeth chronic irritation or inflammation of the lungs cancer Medical Conditions Aggravated: Pre -existing: Eye conditions Skin conditions Respiratory conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Based on classification principles, not classified as hazardous to the environment. Method Us ed for Estimation of Aquatic Toxicity of Mixture Summation Method M -factor (Multiplier) for highly toxic ingredients: 1 Ingredient Ecological Information: Ammonium molybdate: LC50 Oncorhynchus mykiss 96 hr = 320 mg/L; EC50 Daphnia magna 48 hr = 140 mg/ L; EC50 Desmodesmus subspicatus 72 hr = 41 mg/L. Potassium Antimonyl Tartrate: 48 hr EC50 - Daphnia magna = 5 mg/L; 96 hr LC50 - Fish = 12.5 mg/L Sulfamic Acid: Pimephales promelas 96 hr LC50 = 42.2 mg/L. Tartaric Acid: Fish 96 hr LC50 = 150 mg/L; Cerio daphnia dubia 48 hr EC50 = 87.26, 46.04 - 165.37 mg/L. Sulfuric Acid: Lepomis macrochirus 96 hr LC50 = 16 mg/L; Crangon crangon 48 hr EC50 = 70 mg/L CEPA Statement: Sulfuric, Sulfamic and Tartaric acids: Persistent, not bioaccumulative or inherently tox ic to aquatic organisms. Potassium Antimonyl Tartrate: Persistent, not bioaccumulative, and inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID N umber: D002 Special Instructions (Disposal): Working in a large container, cautiously add small portions of the material to cold water with agitation. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the reacted material to the drain. Flush system with plenty of water. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposa l guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Sulphuric Acid Hazard Class: 8 Subsidiary Risk: NA ID Number: UN2796 Packing Group: II T.D.G.: Proper Shipping Name: Sulphuric Acid Hazard Class: 8 Subsidiary Risk: NA UN Number/PIN: 2796 Packing Group: II I.C.A.O.: I.C.A.O. Proper Shipping Name: Sulphuric Acid Hazard Class: 8 Subsidiary Risk: NA ID Number: UN2796 Packing Group: II I.M.O.: Proper Shipping Name: Sulphuric Acid Hazard Class: 8 Subsidiary Risk: NA ID Number: UN2796 Packing Group: II Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerou s goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chem ical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Reactive S.A.R.A . Title III Section 313 (40 CFR 372): This product contains a chemical(s) subject to the reporting requirements of Section 313 of Title III of SARA. Ammonia from dissociable ammonium compound; Sulfuric acid (acid aerosols including mists, vapors, gas , fog, and other airborne forms of any particle size.) 302 (EHS) TPQ (40 CFR 355): Sulfuric Acid 1000 lbs. 304 CERCLA RQ (40 CFR 302.4): Sulfuric Acid 1000 lbs. 304 EHS RQ (40 CFR 355): Sulfuric Acid - RQ 1000 lbs. Clean Water Act (40 CFR 1 16.4): Sulfuric acid - RQ 1000 lbs. RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingr edient(s): Not applicable California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not Applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: Al l ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inv entory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: Vendor Information. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Technical Judgment. Sixth Annual Report on Carcinogens, 1991. U.S. Department of Health and Human Services. Rockville, MD: Technical Resources, Inc. 1991. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. List of Dangerous Substances Classified in Annex I of the EEC Direct ive (67/548) - Classification, Packaging and Labeling of Dangerous Substances, Amended July 1992. Cassaret and Doull's Toxicology, 3rd Ed. New York: Macmillan Publishing Co., Inc., 1986. Gosselin, R. E. et al. Clinical Toxicology of Commercial Product s, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp . 2332 -2983. 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Prager, Jan C. Environmental Contaminants Reference Databook, Volumes I and II. Van Nostrand Reinhold Company, New York. Complete Text of H phrases referred to in Section 3: H290 May be corrosive to metals. H314 Causes severe skin burns and eye damage. Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 14 Month: March Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offer ed under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG /AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Deter mined w/v - weight/volume NV - Not Available v/v - volume/volume

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Phosphorus LR TNT Reagent C Catalog Number: TNT843C

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Nu mber: M02446 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Mixture Intended Use: Laboratory Reagent ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Skin Corrosion/Irritation: Skin Irrit. 2 Specific Target Or gan Toxicity - Single Exposure: STOT SE 3 GHS Label Elements: WARNING

Hazard statements: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritatio n. Precautionary statements: Wear eye protection. IF ON SKIN: Wash with plenty of soap and water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation pers ists: Get medical advice/attention. HMIS: Health: 1 Flammability: 1 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 1 Flammability: 1 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classific ation: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Sodium Metaborate

CAS Number: 7775 -19 -1 . Chemical Formula: BHO 2 Na GHS Classification: Skin Irrit. 2 H315; Eye Irrit. 2 H319; STOT SE 3 H335; Repr. 2, H361 Percent Range (Trade Secret): 20.0 - 30.0 Percent Range Units: weight / weight PEL: 15 mg/M 3 Total Dust; 5 mg/M 3 Respirable Dust TLV: 10 mg/M 3 Inhalable Particles; 3 mg/M 3 Respirable Particles

WHMIS Symbols: Other Toxic Effects Hazardous Components according to GHS: No L-Ascorbic Acid

CAS Number: 50 -81 -7 Chemical Formula: C6H8O6 GHS Classification: Not applicable Percent Range (Trade Secret): 50.0 - 60.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Dextran

CAS Number: 9004 -54 -0 Chemical Formula: (C 6H10 O5) . n GHS Classification: Non -Haz Percent Range (Trade Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Other Toxic Effects ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and l abel (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Call physician if irritation develops. Immediately flush eyes with water for 15 minutes. Skin Contact (First Aid): Wash skin with soap and plenty of water . Remove contaminated clothing. Call physician if irritation develops. Inhalation: Remove to fresh air. Ingestion (First Aid): Give large quantities of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Can burn in fire, releasing toxic vapors. Material is not classified as flammable according to GHS criteria. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Carbon dioxide Dry chemical. Water. Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazard s: May react violently with: strong oxidizers Hazardous Combustion Products: Toxic fumes of: carbon monoxide, carbon dioxide. sodium oxides boron compounds ______6. ACCIDEN TAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Stop spilled material from being released to the environment. Clean -up Technique: If permitted by regulation, Scoop up spilled material into a large beaker and dissolve with water. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Flush reacted material to the drain with a large excess of water. Otherwise, Decontaminate the area of the spill with a soap solution. Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate as needed to perform spill clean -up. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin clothing Do not breathe dust. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep away from: oxidizers Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: s afety glasses with top and side shields Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: adequa te ventilation Precautionary Measures: Avoid contact with: eyes skin clothing Do not breathe: dust Wash thoroughly after handling. Keep away from: oxidizers TLV: Not established. Handle as dust. PEL: Not established. Handle as dust. For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: White Physical State: Solid Molecular Weight: Not applicable Odor: Not determined Odor Threshold: Not determined pH: Not determined Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 600 - 900 kg/cm 3 Viscosity: Not applicable Solubility: Water: 330 g/L Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: 192 ºC (378 ºF) Decomposition Temperature: Not Determined Boiling Point: Not determined Vapor Pressure: Not applicable Vapor Density (air = 1): Not appl icable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: 70 -80% Per 49 CFR definition. (Non -volatile) Flammable Properties: Can burn in fire, releasing toxic vapors. Material is not classified as flammable according to GHS criteria. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not determined Upper Explosion Limits: Not determined Autoignition Temperature: Not determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water accord ing to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper condit ions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: oxidizers alkalies copper iron Hazardous Decomposition: Heating to decomposition releases toxic fumes of carbon monoxid e and carbon dioxide. Conditions to Avoid: Excess moisture ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixtu re. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data Route Data Given Below Based on classification principles, the classification criteria are not met. ATE Oral Rat LD50 = 5860 mg/kg/bw Specific Target Organ Toxicity - Single Exposure (STOT -SE): Target Organs Respiratory Tract Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification crit eria are not met. Skin Corrosion/Irritation: Irritating to skin. Eye Damage: Irritating to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Developmental toxicity associated with the substance or an ingredient of the mixture have been reported. Sodium metaborate (29%) IARC Listed: No NTP Listed: No O.S.H.A. Listed: No Symptoms/Effects: Ingestion: Very large doses may cause: gastrointestinal tract irritation diarrhea harm to unborn child, Inhalation: May cause: respiratory tract irritation Skin Absorption: No effects anticipated Chronic Effects: Chronic overexposure may cause allergic respiratory reactions harm to unborn child Medical Conditions Aggravated: Pre -existing: Skin conditions Eye conditions Respiratory conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Based on classification principles, not classified as hazardous to t he environment. Ingredient Ecological Information: -- Ecological data for ingredients is not indicative of likely ecological harm. CEPA Statement: L(+) -Ascorbic acid and Dextran: Not persistent or bioaccumulative, Not inherently toxic to aquatic organisms; Sodium metaborate: Persistent, not bioaccumulative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Work in an approved fume hood. Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the r eacted material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal gui delines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in comp liance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the ite m is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302. 4): Not applicable 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in thi s product. Identification of Prop. 65 Ingredient(s): Not applicable California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are eith er listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. The Merck Index, 11th Ed. Rahway, New Jersey: Merck and Co., Inc., 1989. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. Gosselin, R. E. et al. Clinical Toxicology of Commercial Products, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. Vendor Information. In -house information. Technical Judgment. Complete Text of H phrases referred to in Section 3: H315 Causes skin irritation. H319 Causes serious eye irritation. H335 May cause respiratory irritation. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/S G/AC.10/36/Add.3). Date of MSDS Preparation: Day: 14 Month: March Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classif ied and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Phosphorus LR TNT Reagent R Catalog Number: TNT843R

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M02441 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemica l Family: Not applicable Intended Use: Laboratory Reagent Phosphate determination ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Corrosive to Metals : Met. Corr. 1 Skin Corrosion/Irritation: Skin Corr. 1A GHS Label Elements: DANGER

Hazard statements: May be corrosive to metals. Causes severe skin burns and eye damage. Precautionary statements: Wear prot ective gloves / protective clothing / eye protection / face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cauti ously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. HMIS: Health: 3 Flammability: 0 Reactivity: 2 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 0 Reactivity: 2 Symbol: Water Reactive WHMIS Hazard Classification: Class D, Division 1, Subdivision B - Toxic material (immediate effects) Class D, Division 2, Subdivision A - Very toxic materials (other toxic effects) Class E - Corrosive material WHMIS Symbols: Corrosive Acute Poison ______3. COMPOSITION / INFORMATION ON INGREDIENTS Hazardous Components according to GHS: Sulfuric acid

CAS Number: 7664 -93 -9 Chemical Formula: H2SO 4 GHS Classification: Met. Corr. 1 H290; Skin Corr. 1 A, H314; Aquatic Acute 3, H402 Percent Range (Trade Secret): 5.0 - 15.0 Percent Range Units: weight / weight PEL: 1 mg/m 3 TLV: 1 mg/m 3

WHMIS Symbols: Acute PoisonCorrosive Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 85.0 - 95.0 Percent Range Units: volume / volume PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Not Flammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may b e generated by thermal decomposition. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Dry chemical. Do NOT use water. Extinguishing Media NOT To Be Used: Not applicable Do NOT use water. Fire / Explosion Hazards: Contact with metals gives off hydrogen gas which is flammable May react violently with: strong bases water Hazardous Combustion Products: This material will not burn. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Absorb spilled liquid with non -reactive sorbent material. Stop spilled material from being released to the environment. Dike large spills to keep spilled material from entering sewage and drainage systems or bodies of water. Clean -up Technique: If permitted by regulation, Cover sp illed material with an alkali, such as soda ash or sodium bicarbonate. Scoop up slurry into a large beaker. Adjust to a pH between 6 and 9. Use sulfuric or citric acid to lower pH. Use soda ash or sodium bicarbonate to increase pH. Flush reacted materia l to the drain with a large excess of water. Otherwise, Decontaminate the area of the spill with a soap solution. Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate local area (15 foot radius o r as directed by your facility's emergency response plan) when: any quantity is spilled. DOT Emergency Response Guide Number: 154 ______7. HANDLING AND STORAGE

Engineering Controls: Use general ventilation to minimize exposure to mist, vapor or dust. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: chemical splash goggles Skin Protection: lab coat disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin clothing Do not breathe: mist/vapor Wash thoroughly after handling. Use with adequate ventilation. Keep away from: alkalies reducers oxidizers metals TLV: Not established PEL: Not established For Occupation al Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Odorless Odor Threshold: Not applicable pH: <1 Metal Corrosivity: Corrosivity Classification: Classified as corrosive to metals. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 1.04 Viscosity: Not determined Solubility: Water: Miscible Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oi l: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: ~112º C (~234º F) Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Vol atile Organic Compounds Content: None intentionally added Flammable Properties: Not Flammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may be generated by thermal decomposition. Flash Poin t: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water accord ing to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper condit ions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: May react violently in contact with: acetic acid caustics chlorosulfonic acid oxidizers reducers Incompatible with: metals Hazardous Decomposition: Contact with metals may release flammable hydrogen gas. Heating to decomposition releases toxic and/or corrosive fumes of: sulfur oxides Conditions to Avoid: Extreme temperatures Heating to decomposition. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data Practically Non -toxic Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classif ication principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Corrosive to skin. Ey e Damage: Corrosive to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Contains Listed Carcinogen Sulfuric acid (mist s and vapors) An ingredient of this mixture is: IARC Group 1: Recognized Carcinogen Sulfuric Acid - The IARC evaluation was based on exposure to the mist or vapor of concentrated sulfuric acid generated during chemical processes. An ingred ient of this mixture is: NTP Listed Group 1: Recognized Carcinogen Sulfuric Acid Mist or Vapor This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: Causes: severe burns May cause: circulatory disturban ces rapid pulse and respirations diarrhea nausea vomiting Inhalation: Causes: severe burns May cause: difficult breathing mouth soreness teeth erosion Skin Absorption: None Reported Chronic Effects: Chronic overexposure may cause eros ion of the teeth chronic irritation or inflammation of the lungs cancer Medical Conditions Aggravated: Pre -existing: Eye conditions Skin conditions Respiratory conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: No ecological data available for this product. Mobility in soil: No data available Based on classification principles, not classified as hazardous to the environment. Ingredient Ecolo gical Information: CEPA Statement: Sulfuric acid: Persistent, not bioaccumulative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D002 Special Instructions (Disposal): If permitted by regulation, Working in a large container, cautiously add small portions of the material to cold water with agitation. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the reacted material to the drain. Flush system with plenty of water. Otherwise, Check with national, local municipal and state authorities and waste contractors for pertinent local information on the disposal of this article. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (More than 10 % sulfuric acid solution) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: III T.D.G.: Proper Shipping Name: Corrosive Liqu id, Acidic, Inorganic, N.O.S. (More than 10 % sulfuric acid solution) Hazard Class: 8 Subsidiary Risk: NA UN Number/PIN: 3264 Packing Group: III I.C.A.O.: I.C.A.O. Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (More than 10 % sulfuric acid solution) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: III I.M.O.: Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (More than 10 % sulfuric acid solution) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: III Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the it em is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classific ation does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Com munication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Delayed (Chronic) Health Hazard Immediate (Acute) Health Hazard Reactive S.A.R.A. Title III Section 313 (40 CFR 372): This product do es NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. 302 (EHS) TPQ (40 CFR 355): Sulfuric Acid 1000 lbs. 304 CERCLA RQ (40 CFR 302.4): Sulfuric Acid 1000 lbs. 304 EHS RQ (40 CFR 355): Sulfuric Acid - RQ 1000 lbs. Clean Water Act (40 CFR 116.4): Sulfuric acid - RQ 1000 lbs. RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): Not applicable California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are eith er listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: Vendor Information. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Technical Judgment. Si xth Annual Report on Carcinogens, 1991. U.S. Department of Health and Human Services. Rockville, MD: Technical Resources, Inc. 1991. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. L ist of Dangerous Substances Classified in Annex I of the EEC Directive (67/548) - Classification, Packaging and Labeling of Dangerous Substances, Amended July 1992. IARC Monographs on the Evaluation of the Carcinogenic Risks to Humans. World Health Organ ization (Volumes 1 -42) Supplement 7. France: 1987. Cassaret and Doull's Toxicology, 3rd Ed. New York: Macmillan Publishing Co., Inc., 1986. Gosselin, R. E. et al. Clinical Toxicology of Commercial Products, 5th Ed. Baltimore: The Williams and Wilk ins Co., 1984. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. 29 CFR 1900 - 1910 (Code of Fed eral Regulations - Labor). Prager, Jan C. Environmental Contaminants Reference Databook, Volumes I and II. Van Nostrand Reinhold Company, New York. Complete Text of H phrases referred to in Section 3: H290 May be corrosive to metals. H314 Causes seve re skin burns and eye damage. Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 14 Month: March Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). Not determined ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations. THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrite Dosicap Reagent Catalog Number: TNT839A

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M02440 Chemical Name: Not applicable CAS Number: Not applicable Additio nal CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Salts of Organic Acids Intended Use: Laboratory Reagent ______2. HAZARDS ID ENTIFICATION

GHS Classification: Hazard categories: Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Skin Corrosion/Irritation: Skin Irrit. 2 Respiratory or Skin Sensitization: Skin Sens.1 GHS Label Elements: WARNING

Hazard statements: Causes skin irritation. May cause an allergic skin reaction. Causes serious eye irritation. Precautionary statements: Wear protective gloves / protective clothing / eye protection / face protection. If skin irritation or rash occurs: Get medical advice/attention. If eye irritation persists: Get medical advice/attention. Wash contaminated clothing before reuse. HMIS: Health: 1 Flammability: 1 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 1 Flammability: 1 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Not applicable WHMIS Symbols: Not applicable ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: 2-Naphthalenesulfonic acid, 8 -amino -, sodium salt

CAS Number: 6322 -37 -8 Chemical Formula: C10 H9NO 3S . Na GHS Classification: Skin Ir rit. 2, H315; Skin Sens. 1, H317; Eye Irrit. 2A, H319 Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Sodium Sulfanilate

CAS Number: 515 -74 -2 Chemical Formula: C6H6NNaO 3S GHS Classification: Skin Irrit. 2 H315; Eye Irrit. 2 H319; Skin Sens. 1 H317 Percent Range (Trade Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Sodium Hydroxide

CAS Number: 1310 -73 -2 Chemical Formula: NaOH GHS Classification: Met. Corr.1, H 290; Skin Corr. 1A, H314; Aquatic Acute 3, H402 Percent Range (Trade Secret): < 0.5 Percent Range Units: weight / weight PEL: 2 mg/m³ TLV: Not established

WHMIS Symbols: Acute PoisonCorrosive Hazardous Components according to GHS: No Mannitol

CAS Number: 69 -65 -8 Chemical Formula: C6H14 O6 GHS Classification: Not hazardous Percent Range (Trade Secret): 60.0 - 70.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable Other component

CAS Number: Not applicable Chemical Formula: Not applicable. GHS Classification: Not applicable Percent Range (Trade Secret): < 0.5 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Can burn in fire, releasing toxic vapors. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Haza rds: None reported Hazardous Combustion Products: Toxic fumes of: carbon monoxide, carbon dioxide. sulfur oxides. nitrogen oxides. sodium monoxide ______6. ACCIDENTAL RELEA SE MEASURES

Handling: Avoid contact with eyes skin clothing Do not breathe dust. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Protect from: heat moisture Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: di sposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes Do not breathe: dust Wash thoroughly after handling. Protect from: heat moisture TLV: Not established. As particles <3 mg/m 3, respirable; 10 mg/m 3, inhalable PEL: Not established. As dust 5 mg/m 3, respirable; 15 mg/m 3, Total dust. For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance : White powder Physical State: Solid Molecular Weight: Not applicable Odor: None Odor Threshold: Not applicable pH: Not determined Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criter ia. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): Not determined Viscosity: Not determined Solubility: Water: Soluble Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: About 100% non -volatile VOC (EPA definition) Flammable Properties: Can burn in fire, releasing toxic vapors. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: acids Hazardous Decomposition: Heating to decomposition releases: carbon dioxide carbon monoxide nitrogen oxides sulfur oxides Conditions to Avoid: Heating t o decomposition. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Sp ecific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Irritating to skin. Eye Damage: Irritating to eyes. Sensitization: Skin Sensitiz er CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. IARC Listed: No NTP Listed: No O.S.H.A. Listed: No Symptoms/Effects: Ing estion: None reported Inhalation: May cause: irritation of nose and throat Skin Absorption: None Reported Chronic Effects: None reported Medical Conditions Aggravated: None reported ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: Sodium sulfanilate: 96 hr Pimephales promelas LC50 = 100 mg/L; 48 hr Daphnia magna EC50 = 86 mg/L; 72 hr Scenedesmus subspicatus ErC50 = 375 mg/L; Sodium hydroxide: 96 hr Oncorhynchus mykiss LC50 = 45.4 mg/L; 48 hr Daphnia sp. EC50 = 100 mg/L; 48 hr Cru staceans EC50 = 40.4 mg/L Sulfanilic acid sodium salt: CEPA Statement: Not persistent, bioaccumulative, or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These d isposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Cla ss 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This prod uct meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard S.A.R.A. Title III Section 3 13 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 35 5): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Not applicable State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): Not applicable California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: TSCA Listed: Yes CAS Number: Not applicable Canadian Inventory Status: One or m ore ingredient(s) is not listed on the DSL/NDSL inventories. EEC Inventory Status: EINECS Listed: Yes Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. The Merck In dex, 11th Ed. Rahway, New Jersey: Merck and Co., Inc., 1989. Gosselin, R. E. et al. Clinical Toxicology of Commercial Products, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. Technical Judgment. Vendor Information. Complete Text of H phrases referred to in Section 3: H315 Causes skin irritation. H317 May cause an allergic skin reaction. H319 Causes serious eye irritation . Revision Summary: . . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 07 Month: February Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that wa s established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not A vailable v/v - volume/volume

THE INFORMATION C ONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrite Reagent Vial Catalog Number: TNT839R

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M02439 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of nitrite ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Skin Corrosion/Irritation: Skin Irrit. 2 GHS Label Elements: WARNING

Hazard statements: Causes skin irritation. Causes serious eye irritation. Precautionary statements: Wear protective gloves / protective clothing / eye protection / face protection. IF ON SKIN: Wash with plenty of soap and water. I F IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. HMIS: Health: 1 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 1 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Citric Acid CAS Number: 77 -92 -9 Chemical Formula : C6H8O7 GHS Classification: Eye Irrit. 2 H319; Skin irrit. 2, H315 Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as total dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as res pirable dust

WHMIS Symbols: Other Toxic Effects Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Perc ent Range (Trade Secret): 70 - 90 Percent Range Units: volume / volume PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable Other components, each

CAS Number: Not applicable Chemical Formula: Not applicable. GHS Classification : Not applicable Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Material will not burn. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: May react violently with: metal nitrates Hazardous Combustion Products: This material will not burn. ______6. ACCI DENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emerg ency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Contai nment Technique: Stop spilled material from being released to the environment. Clean -up Technique: Cover spilled material with an alkali, such as soda ash or sodium bicarbonate. Scoop up slurry into a large beaker. Dilute with a large excess of wat er. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Flush reacted material to the drain with a large excess of water. Decontaminate the area of the spill with a soap solution. Evacuation Procedure: Evacuate as needed to perform spill clean -up. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin clothing Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep container tightly closed when not in use. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: lab coat disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Prote ction: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin Wash thoroughly after handling. TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/I nformation on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless Physical State: Liquid Molecular Weight: Not applicable Odor: None Odor Threshold: Odorless pH: Not determined Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1 ; air =1): Not determined Viscosity: Not determined Solubility: Water: Miscible Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: 15 -20 %, Low Vapor Pressure (Not volatile) Flammable Properties: Material will not burn. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoigni tion Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heati ng or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: May react violently in contact with: metal nitrates Ha zardous Decomposition: Toxic fumes of: carbon dioxide carbon monoxide Conditions to Avoid: Extreme temperatures ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metaboli sm and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Based on classification principles, the classification criteria are not met. ATE Oral Rat LD50 = 16584 mg/kg Speci fic Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification cri teria are not met. Skin Corrosion/Irritation: Irritating to skin. Eye Damage: Irritating to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: None reported Inhalation: No effects anticipated Skin Absorption: No effects anticipated Chronic Effects: Citric acid chronic overexposure may cause effects due to the ability of citric acid to chelate metals, which could impair the body's ability to absorb calcium and iron. Medical Conditions Aggravated: Pre -existing: Eye conditions Skin conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological I nformation: 96 hr Lepomis macrochirus LC50 = 1516 mg/L; 72 hr Daphnia magna LC50 = 120mg/L; LC50 48 hr Leuciscus idus melanotus LC50 = 440 mg/L; 48 hr Crustaceans LC50 = 160 mg/L. di -Sodium hydrogen phosphate: CEPA Statement: Persistent. ______13. DISPOSAL CONSIDERATIONS EPA Waste ID Number: Not applicable Special Instructions (Disposal): Dilute material with excess water making a weaker than 5% solution. Adjust to a pH be tween 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Empty Containers: Rinse three t imes with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulati ons or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiar y Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Addi tional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categor ization (40 CFR 370): Immediate (Acute) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Sodium Phosphate, Dibasic 5000 lbs. 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Sodium phosphate, dibasic - RQ 5000 lbs. RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicab le Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: One or more ingredien t(s) is not listed on the DSL/NDSL inventories. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Air Contaminan ts, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. Technical Judgment. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Fire Protection Guide on Hazardous Materials, 10th Ed. Qui ncy, MA: National Fire Protection Association, 1991. In -house information. Complete Text of H phrases referred to in Section 3: H315 Causes skin irritation. H319 Causes serious eye irritation. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 08 Month: February Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted s afety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.1 0/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWE VER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrate LR TNT Reagent A Catalog Number: TNT835A

Hach Company Emergency Telephone Numb ers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M01920 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrate d forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Determination of nitrate ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Flammable Liquids: Flam. Liq. 3 Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Specific Target Organ Toxicity - Single Exposure: STOT SE 3 GHS Label Elements: WARNING

Hazard statements: Flammable liquid and vapour. Causes serious eye irritation. May cause drowsiness or dizziness. Precautionary statements: Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear pr otective gloves / protective clothing / eye protection / face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/atte ntion. HMIS: Health: 2 Flammability: 2 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 2 Flammability: 2 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class B, Division 3 - Combustible liquids Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Flammable / Combustible Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS Hazardous Components according to GHS: Isopropanol

CAS Number: 67 -63 -0 Chemical Formula: C3H8O GHS Classification: Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 400 ppm (980 mg/m 3) TLV: 200 ppm (492 mg/m 3)

WHMIS Symbols: Flammable / CombustibleOther Toxic Effects Isoamyl acetate

CAS Number: 123 -92 -2 Chemical Formula: C7H14 O2 GHS Classification: Flam. Liq. 3, H226; Skin Irrit. 3, H316; Eye Irrit . 2B, H320; STOT Single 3, H335; Aq. Acute 3, H402 Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / weight PEL: OSHA 8 hr TWA: 100 ppm TLV: ACGIH TWA: 50 ppm; STEL: 100 ppm

WHMIS Symbols: Flammable / Combustible 2,6 -Dimethylphenol

CAS Number: 576 -26 -1 Chemical Formula: C8H10 O GHS Classification: Acute Tox. 3 -Derm, H311; Acute Tox. 3 -Orl, H301; Skin Corr. 1B, H314; Aquatic Chronic 2, H411 Percent Range (Trade Secret): < 0.1 Percent Range Units: weight / weight PEL: Not establi shed TLV: Not established

WHMIS Symbols: Acute PoisonCorrosive Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 75.0 - 85.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable Other components, each

CAS Number: Not applicable Chemical Formula: Not applicable. GHS Classi fication: Not applicable Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Wash skin with plenty of water. Call physician if irritation develops. Remove contaminated clothing. Inhalation: Remove to fresh air. Give artificial respiration if necessary. Call physician. Ingestion (First Aid): Give large quantities of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Combustible Liquid Can burn in fire, releasing toxic vapors. Fire Fighting Instruction: As in any fire, wear self -contain ed breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Water. Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: May react violently with: oxidizers Combustible liquid May ignite on co ntact with: heat sparks, flame, or other ignition sources Hazardous Combustion Products: carbon monoxide, carbon dioxide. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedu res. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Absorb spilled liquid with non -reactive sorbent material. Stop spilled material from being released to the environment. Clean -up Technique: If permitted by regulation, Absorb spilled liquid with non -reactive sorbent material. Incinerate material at a government approved hazardous waste facility. Decontaminate the area of the spill with a soap solution. Otherwise, Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate local area (15 foot radius or as directed by yo ur facility's emergency response plan) when: a gallon or more of liquid is spilled. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin Do not breathe mist or vapors. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Protect from: heat Keep away from: sparks, flames and other ignition sources Flammability Class: Class II ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Contro ls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: chemical splash goggles Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifica tions of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin Wash thoroughly after handling. Protect from: heat Keep away from: sparks , flames and other ignition sources TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Alcoholic Odor Threshold: Not determined pH: 5.5 Metal Corrosivity: Corrosivity Class ification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 0.95 Viscosity: Not determined Solubility: Water: Miscible Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: 82° C 180° F Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: Not determined Flammable Properties: Combustible Liquid Can burn in fire, rel easing toxic vapors. Flash Point: 26° C 79° F Method: Closed cup Flammability Limits: Lower Explosion Limits: Not determined Upper Explosion Limits: Not determined Autoignition Temperature: Not determined Explosive Properties: Not classif ied according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS cr iteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stor ed under proper conditions. Mechanical Impact: None reported Static Discharge: Not applicable Reactivity / Incompatibility: Incompatible with: strong acids oxidizers Hazardous Decomposition: Heating to decomposition releases: carbon monoxide carbon dioxide Conditions to Avoid: Extreme temperatures Evaporation Contact with heat, sparks, open flames or other ignition sources. Exposure to air. ______11. TOXICOLOGIC AL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data AT E Oral Rat LD50 = 16066 mg/kg ATE Dermal Rat LD50 = 44235 mg/kg ATE Inhalation LC50 = 226.7 mg/l Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Respiratory Tract Central nervous system Kidneys Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Based on classification principles, the clas sification criteria are not met. Eye Damage: Irritating to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cel l mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: irritation of the mouth and esophagus Very large doses may cause: drunkenness nausea vomiting blood pressure problems rapid pulse and respirati ons Inhalation: May cause: irritation of nose and throat Skin Absorption: None Reported Chronic Effects: None reported Medical Conditions Aggravated: Pre -existing: Eye conditions Impaired pulmonary function such as obstructive airway dis eases. ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: Isopropanol: LD50 goldfish 5,000 mg/L/24 hr, LC50 brown shrimp 1,400 mg/L/48 hr, LC50 brown shrimp 1150 mg/L/96 hr,LC50 fathead minnows 11,160 mg/L/24 hr, cell multiplication test Microcystis aeruginosa (algae) 1,000 mg /L No ecological data available for the ingredients of this product. CEPA Statement: 2 -Propanol: Persistent, not bioaccumulative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D001 Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): T hese disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be di sposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Alcohol, N.O.S. (Isopropanol Solution) Hazard Class: 3 Subsidiary Risk: NA ID Number: UN1987 Packing Group: III T.D.G.: Proper Shipping Name: Alcohol, N.O.S. (Isopropanol Solution) Hazard Class: 3 Subsidiary Risk: NA UN Number/PIN: 1987 Packing Group: III I.C.A.O.: I.C.A.O. Proper Shipping Name: Alcohols, N.O.S. (Isopropanol Solution) Hazard C lass: 3 Subsidiary Risk: NA ID Number: UN1987 Packing Group: III I.M.O.: Proper Shipping Name: Alcohol, N.O.S. (Isopropanol Solution) Hazard Class: 3 Subsidiary Risk: NA ID Number: UN1987 Packing Group: III Additiona l Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set o r kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Fire Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inven tory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIo C) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: Air Contaminants, Federal Register, Vol. 54, No. 12. Thursd ay, January 19, 1989. pp. 2332 -2983. In -house information. Technical Judgment. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Outside Testing. Complete Te xt of H phrases referred to in Section 3: H226 Flammable liquid and vapour. H319 Causes serious eye irritation. H336 May cause drowsiness or dizziness. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GH S ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 03 Month: August Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as spec ified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has bee n classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrate LR TNT Reagent Vial Catalog Number: TNT835R

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medica l and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M01749 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of nitrate ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Corrosive to Metals: Met. Corr. 1 . Skin Corrosion/Irritation: Skin Corr. 1A GHS Label Elements: DANGER

Hazard statements: May be corrosive to metals. . Causes severe skin burns and eye damage. Precautionary statements: Wear protective gloves / protective clothing / eye protection / face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/Take off immediately all contaminat ed clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. HMIS: Health: 3* Flamma bility: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class E - Corrosive material Class D, Division 1, Sub division B - Toxic material (immediate effects) WHMIS Symbols: Corrosive Acute Poison ______3. COMPOSITION / INFORMATION ON INGREDIENTS Hazardous Components according to GHS: Sulfuric acid

CAS Number: 7664 -93 -9 Chemical Formula: H2SO 4 GHS Classification: Met. Corr. 1 H290; Skin Corr. 1A, H314; Aquatic Acute 3, H402 Percent Range (Trade Secret): 55.0 - 65.0 Percent Range Units: we ight / weight PEL: 1 mg/m 3 TLV: 1 mg/m 3

WHMIS Symbols: Acute PoisonCorrosive Phosphoric Acid

CAS Number: 7664 -38 -2 Chemical Formula: H3PO 4 GHS Classification: Met. Corr. 1, H290; Acute Tox. 4 -Orl, H302; Acute Tox. 5 -Derm, H313; Skin Corr. 1B, H 314; Eye Dam. 1, H318 Percent Range (Trade Secret): 25.0 - 35.0 Percent Range Units: weight / weight PEL: 1 mg/m 3 TLV: 1 mg/m 3

WHMIS Symbols: Corrosive Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 1.0 - 10.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Not Flammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may be generated by thermal dec omposition. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: Contact with metals gives off hydrogen gas which is flammable Hazardous Combustion Products: This material will not burn. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company' s emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Absorb spilled liquid with non -reactive sorbent material. Stop spilled material from being released to the environment. Clean -up Technique: If permitted by regulation, Cover spilled material with a dry acid, such as citric o r boric. Scoop up slurry into a large beaker. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Flush reacted material to the drain with a large excess of water. Decontaminate the area of the spill with a soap solut ion. Otherwise, Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate local area (15 foot radius or as directed by your facility's emergency response plan) when: any quantity is spilled. If condi tions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: 154 ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin clothing D o not breathe mist or vapors. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep away from: metals Protect from: heat Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain adequate ventilation to keep vapor level below TWA for chemicals in this product. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: chemical splash goggles Skin Protecti on: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contac t with: eyes skin clothing Do not breathe: mist/vapor Wash thoroughly after handling. Use with adequate ventilation. Protect from: heat Keep away from: metals TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Acidic Odor Threshold: Not available pH: <1 Metal Corrosivity: Corrosivity Classification: Classified as corrosive to metals. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 1.3 Viscosity: Not determined Solubility: Water: Miscible Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: Not applicable Flammable Properties: Not Flammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may be generated by thermal decomposition. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: No t classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: May react violently in contact with: strong bases sulfites Incompatible with: plastics Hazardous Decomposition: Contact with metals may release flammable hydrogen ga s. Heating to decomposition releases toxic and/or corrosive fumes of: phosphorus oxides Conditions to Avoid: Excess moisture Extreme temperatures Heating to decomposition. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data ATE Oral Rat LD50 = 3610 mg/kg Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Spec ific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Corrosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Based on classifi cation principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. An ingredient of this mixture i s: IARC Group 1: Recognized Carcinogen Sulfuric Acid - The IARC evaluation was based on exposure to the mist or vapor of concentrated sulfuric acid generated during chemical processes. NTP Listed Group 1: Recognized Carcinogen Sulfuric Ac id Mist or Vapor This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: abdominal pain nausea vomiting collapse death Causes: severe burns Inhalation: May cause: coughing difficult breathin g chest pain irritation of nose and throat Causes: severe burns Skin Absorption: None Reported Chronic Effects: Chronic overexposure may cause dermatitis chronic irritation or inflammation of the lungs cancer Medical Conditions Aggravated: Persons with impaired liver, kidney or respiratory function may be more susceptible to the effects of Phosphoric Acid. Pre -existing: Eye conditions Skin conditions ______12. EC OLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: Phosphoric Acid: TLm mosquito fish = 138 mg/L/24 -96H in turbid water @ 22 -24° C; Sulfuric Acid: The 48 -Hour TLm in flounder is 100 - 300 ppm. CEPA Statement: Phosphoric Acid and Sulfuric Acid: Persistent, not bioaccumulative or organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D002 Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an alk ali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Otherwise, Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmenta l regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must b e passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Sulfuric Acid/Phospho ric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: II T.D.G.: Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Sulfuric Acid/Phosphoric Acid Mixture) Hazard Class: 8 Subsid iary Risk: NA UN Number/PIN: 3264 Packing Group: II I.C.A.O.: I.C.A.O. Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Sulfuric Acid/Phosphoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: II I.M.O.: Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Sulfuric Acid/Phosphoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: II Additional In formation: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or ki t, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization ( 40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Sulfuric Acid 1000 lbs. 304 CERCLA RQ (40 CFR 302.4): Phosphoric acid 5000 lbs. Sulfuric Acid 1000 lbs. 304 EHS RQ (40 CFR 355): Sulfuric Acid - RQ 1000 lbs. Clean Water Act (40 CFR 116.4): Phosphoric acid - RQ 5000 lbs. Sulfuric acid - RQ 1000 lbs. RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identi fication of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b ) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AIC S) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

Ref erences: TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. Tec hnical Judgment. Vendor Information. Complete Text of H phrases referred to in Section 3: H290 May be corrosive to metals. Not applicable H314 Causes severe skin burns and eye damage. Revision Summary: . Substantial revision to comply with EU R eg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 18 Month: February Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Ca nada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understan d this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations. THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXP RESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Ammonia LR TNT Reagent A Catalog Number: TNT831A

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M01878 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not app licable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of ammonium nitrogen ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Acute Toxicity: Acute Tox. 4 -Orl Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Hazardous to the Aquatic Environment: Aquatic Chronic 2 GHS Label Elements: WARNING

Hazard statements: Harmful if swallowed. Causes serious eye irritation. Toxic to aquatic life with long lasting effects. Contact with acids liberates toxic gas. Precautionary statements: Wear protective glov es / protective clothing / eye protection / face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention. HMIS : Health: 3 Flammability: 0 Reactivity: 1 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 0 Reactivity: 1 Symbol: oxy WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic m aterial (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS Hazardous Components according to GHS: Sodium Nitroferricyanide

CAS Number: 14402 -89 -2 Chemical Formula: Na 2Fe(CN) 5NO GHS Classification: Acute Tox. Orl. 3, H301 Percent Range (Trade Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: 5 mg/m³ as CN¯ TLV: 5 mg/m³as CN -

WHMIS Symbols: Acute Poison Sodium Dichloroisocyanurate

CAS Number: 2893 -78 -9 Chemical Formula: C3HCl 2N3O3. Na GHS Classification: Ox. Solid 2, H272; Acute Tox. Orl 4, H302; Acute Tox. Inh. 4, H332; Eye Dam. 1, H318; Skin Irrit. 2, H315; STOT Single 3, H335; Aquatic Chronic 1, H410 Percent Range (Trade Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: OxidizingOther Toxic EffectsCorrosive Hazardous Components according to GHS: No Mannitol

CAS Number: 69 -65 -8 Chemical Formula: C6H14 O6 GHS Classification: Not hazardous Percent Range (Trade Secret): 70.0 - 80.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: During a fire, irritating and highly toxic gases may be generated by thermal decomposition. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Evacuate area and fight fire from a safe distance. Extinguishing Media: Carbon dioxide Dry chemical. Water. Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported Hazardous Combustion Products: Toxic fumes of: chlorides sodium monoxide nitrogen oxides. carbon monoxide, carbon dioxide. cyanide compounds ______6. ACCIDENTAL RELEASE MEASURES Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedu res. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Stop spilled material from being released to the environment. Clean -up Technique: Avoid contact with spilled material. Sweep up material. Dispose of material in government approved hazardous waste facility. Decontaminate the area of the spill with a soap solution. Evac uation Procedure: Evacuate local area (15 foot radius or as directed by your facility's emergency response plan) when: any quantity is spilled. If conditions warrant, increase the size of the evacuation. Deny access to unnecessary and unprotected pers onnel. DOT Emergency Response Guide Number: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin clothing Do not breathe dust. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep container tightly closed when not in use. Store in a cool, dry plac e. Keep away from: acids / acid fumes. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial h ygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Direct ive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin clothing Keep away from: acids/acid fumes Wash thoroughly after handling. Use wit h adequate ventilation. TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: White pellets Physical State: Solid Molecular Weight: Not applicable Odor: None Odor Threshold: Not available pH: (5% solution) pH = 7 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): Not determined Viscosity: Not determined Solubility: Water: 160 g/L Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not applicab le Vapor Pressure: Not applicable Vapor Density (air = 1): Not applicable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: Not determined Flammable Properties: During a fire, irritating and highly toxic gases may be generated by thermal decomposition. Flash Point: Not determined Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not determined Explosive Pr operties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: acids urea organic materials easily chlorinated material Hazardous Decomposition: Heating to decomposition releases toxic and/or corrosive fumes of: cyanide nitrogen oxides sodium oxides carbon dioxide carbon monoxide chlorides Condit ions to Avoid: Heating to decomposition. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologicall y Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data ATE (Mix) Oral LD50 = 728 mg/kg. ATE (mix) Dermal LD50 = 43376 mg/kg. Specific Target Organ Toxicity - Single Expos ure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irri tation: Based on classification principles, the classification criteria are not met. Eye Damage: Irritating to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain a ny NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: Causes: abdominal pain blood pressure problems confusion cyanosis ( a reduction of the blood's ability to carry oxygen, giving a bluish discoloration) diarrhea fatigue giddiness nausea vomiting weakness unconsciousness death bleeding from stomach emaciation lethargy Very large doses may cause: coma liver damage Sodium nitroferricyanide produces a delayed cyanide poiso ning reaction. Inhalation: Effects similar to those of ingestion. Skin Absorption: Will be absorbed through the skin. Chronic Effects: None reported Medical Conditions Aggravated: None reported ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological I nformation: Sodium Dichloroisocyanurate: Daphnia magna 48 hr LC50 = 0.28 mg/L; Oncorhynchus mykiss 96 h rLC50 = 0.25 mg/L. CEPA statement: Sodium Nitroferricyanide: Persistent, inherently toxic to qauatic organisms, not bioaccumulative; Sodium Dichloro isocyanurate, Mannitol: Not persistent, not inherently toxic to qauatic organisms, or bioaccumulative. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Spe cial Instructions (Disposal): Dispose of material in an E.P.A. approved hazardous waste facility. Empty Containers: Dispose of empty container as normal trash. Rinse three times with an appropriate solvent. NOTICE (Disposal): These disposal guid elines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compl iance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Environmentally hazardous substances, solid, n.o.s. (Sodium dichloroisocyanurate mixture) Hazard Class: 9 Subsidiary Risk: NA ID Number: UN3077 Packing Group: III T.D.G.: Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (Sodium dichloroisocyanurate mixture) Hazard Class: 9 Subsidiary Risk: NA UN Number/PIN: 3077 Packing Group: III I.C.A.O.: I.C.A.O. Proper Shi pping Name: Environmentally Hazardous Substance, Solid, nos (Sodium dichloroisocyanurate mixture) Hazard Class: 9 Subsidiary Risk: NA ID Number: UN3077 Packing Group: III I.M.O.: Proper Shipping Name: Environmentally Hazardous Sub stance, Solid, nos (Sodium dichloroisocyanurate mixture) Hazard Class: 9 Subsidiary Risk: NA ID Number: UN3077 Packing Group: III Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the clas sification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULAT ORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370) : Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. Not applicable 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains no RCRA regulated substances. State Regulation s: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inv entories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Statu s: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: Vendor Information. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. The Merck Index, 11th Ed. Rahway, New Jersey: Merck and Co., Inc., 1989. Technical Judgment. Sixth Annual Report on Carcinogens, 1991. U.S. Department of Health and Human Services. Rockville, MD: Technical Resources, Inc. 1991. NIOSH Registry of Toxic Effects of Chemical Substances, 1985 -86. Cincinnati: U.S. Department of Health and Human Services, April, 1987. List of Dangerous Substances Classified in Annex I of the EEC Directive (67/548) - Classification, Packaging and Labe ling of Dangerous Substances, Amended July 1992. IARC Monographs on the Evaluation of the Carcinogenic Risks to Humans. World Health Organization (Volumes 1 -42) Supplement 7. France: 1987. Gosselin, R. E. et al. Clinical Toxicology of Commercial Prod ucts, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Fire Protection Guide on Hazardous Materials, 10th Ed. Quincy, MA: National Fire Protection Asso ciation, 1991. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. Cassaret and Doull's Toxicology, 3rd Ed. New York: Macmillan Publishing Co., Inc., 1986. Air Contaminants, Federal Register, Vo l. 54, No. 12. Thursday, January 19, 1989. pp. 2332 - 2983. 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). In -house information. Complete Text of H phrases referred to in Section 3: H302 Harmful if swallowed. H319 Causes serious eye irrit ation. H411 Toxic to aquatic life with long lasting effects. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 07 Month: July Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). Thi s SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/vol ume NV - Not Available v/v - volume/volume

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Ammonia LR TNT Reagent Vial Catalog Number: TNT831R

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M01870 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of ammonium nitrogen ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Skin Corrosion/Irritation: Skin Corr. 1A GHS La bel Elements: DANGER

Hazard statements: Causes severe skin burns and eye damage. Precautionary statements: Wear protective gloves / protective clothing / eye protection / face protection. IF SWALLOWED: rinse m outh. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Contin ue rinsing. Immediately call a POISON CENTER or doctor/physician. HMIS: Health: 1 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 1 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) Class D, Division 2, Subdivision A - Very toxic materials (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS Hazardous Components according to GHS: Sodium Salicylate

CAS Number: 54 -21 -7 Chemical Formula: C7H5O3Na GHS Classification: Acute Tox. O rl 4, H302; Skin Irrit. 2, H315; Eye Dam. 1, H318; STOT Single 3, H335 Percent Range (Trade Secret): 1.0 - 5.0 Percent Range Units: weight / volume PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dust

WHMIS Symbols: Other Toxic Effects Sodium Hydroxide

CAS Number: 1310 -73 -2 Chemical Formula: NaOH GHS Classification: Met. Corr.1, H290; Skin Corr. 1A, H314; Aquatic Acute 3, H402 Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / volume PEL: 2 mg/m³ TLV: Not established

WHMIS Symbols: Acute PoisonCorrosive Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 90.0 - 100.0 Percent Range Units: volume / volume PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable Sodium Citrate

CAS Number: 68 -04 -2 . Chemical Formul a: C6H5O7Na 3 2H 2O GHS Classification: Not applicable Percent Range (Trade Secret): 1.0 - 5.0 Percent Range Units: weight / volume PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust; 3 mg/m 3 as respirable dus t

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Wash skin with soap and plenty of water. Call physician if irritation develops. Remove contaminated clothing. Inhalation: Remove to fresh air. Ingestion (First Aid): Do not induce vomiting. Call physician immediately. Never give anythin g by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES Flammable Properties: Material will not burn. Fire Fighting Instruction: As in any fire, wear self -con tained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported Hazardou s Combustion Products: May emit acrid smoke and fumes. ______6. ACCIDENTAL RELEASE MEASURES

Handling: Avoid contact with eyes skin Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep container tightly closed when not in use. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Use general ventilati on to minimize exposure to mist, vapor or dust. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex glove s In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin Do not breathe: dust Wash thoroughly after handling. Use with adequate ventilation. TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Odorless Odor Threshold: Odorless pH: 12.5 Metal Cor rosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 1.02 Viscosity: Not determined Solubility: Water: Miscible Acid: Miscible Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: Not applicable Flammable Properties: Material will not burn. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: acids iodine iron salts lead acetate oxidizers Silver Nitrate sodium phosphate Hazardous Decomposition: Toxic fumes of: carbon dioxide carbon monoxide Conditions to Avoid: Extreme temperatures Exposure to light. Excess moisture ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism an d Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data ATE Oral Rat LD50 = 79487 mg/kg Specific Targe t Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Corrosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to re production): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: irritation of the mouth and esophagus Very large doses may cause: headache dizziness ringing in the ears (tinnitus) blurred vision confusion d rowsiness thirst nausea vomiting diarrhea convulsions coma Inhalation: No effects anticipated Skin Absorption: Will be absorbed through the skin. Effects similar to those of ingestion Chronic Effects: Salicylates may cause ringing in the ears (tinnitus), abnormal bleeding, gastric ulceration, mental deterioration, skin eruption, temporary vision loss, and other optical effects. Medical Conditions Aggravated: Allergies or sensitivity to aspirin or salicylates. ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: -- No ecological data available for the ingredients of this product. CEPA Statement: Sodium salicylate, tri -Sodium citrate: Not persistent or bioaccumulative, not inherently toxic to aquatic organisms; Sodium hydroxide: Persistent, not bioaccumulative o r inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D002 Special Instructions (Disposal): Working in small batches, dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Open cold water tap completely, slowly pour the reacted material to the drain. Empty Containers: Rinse three times with an appropriate solve nt. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a pac kaging return system. ______14. TRANSPORT INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Delayed (Chronic) Health Hazard Immediate (Acute) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirem ents of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Sodium Hydroxide 1000 lbs. 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Sodium Hydroxide - RQ = 1000 lbs. (454 kgs.) RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: Vendor Information. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Technical Judgment. Sixth Annual Report on Carcinogens, 1991. U.S. Department of Health and Human Services. Rockville, MD: Technical Resources, Inc. 1991. Sax, N. Irving. Dangerous Properties of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. List of Dangerous Substances Classified in Annex I of the EEC Directive (67/548) - Classi fication, Packaging and Labeling of Dangerous Substances, Amended July 1992. IARC Monographs on the Evaluation of the Carcinogenic Risks to Humans. World Health Organization (Volumes 1 -42) Supplement 7. France: 1987. CCINFO RTECS. Canadian Centre for Occupational Health and Safety. Hamilton, Ontario Canada: 30 June 1993. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Complete Text of H ph rases referred to in Section 3: H314 Causes severe skin burns and eye damage. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 07 Month: Jul y Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered u nder the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC. 10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determine d w/v - weight/volume NV - Not Available v/v - volume/volume

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATIO N

Product Name: Nitrogen LR TNT Reagent A Catalog Number: TNT826A

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M02447 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Skin Corrosion/Irritation: Skin Corr. 1A GHS Label Elements: DANGER

Hazard statements: Causes severe skin burns and eye damage. Precautionary statements: Wear protective gloves / protective clothing / eye protection / face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remo ve/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/p hysician. HMIS: Health: 3 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS Hazardous Components according to GHS: Sodium Hydroxide

CAS Number: 1310 -73 -2 Chemical Formula: NaOH GHS Classification: Met. Corr.1, H290; Skin Corr. 1A, H314; Aquatic Acute 3, H402 Percent Range (Trade Secret): 0.5 - 3.0 Percent Range Units: we ight / volume PEL: 2 mg/m³ TLV: Not established

WHMIS Symbols: Acute PoisonCorrosive Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance accord ing to GHS. Percent Range (Trade Secret): > 99.0 Percent Range Units: weight / volume PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable Other component

CAS Number: Not applicable Chemical Formula: Not applicable. GHS Classification: Not applicable Percent Range (Trade Secret): < 0.01 Percent Range Units: weight / volume PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Material will not burn. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appro priate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: This product will not burn or explode. Hazardous Combustion Products: This material will not burn. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Absorb spilled liquid with non -reactive sorbent material. Stop spilled material from being released to the environment. Clean -up Technique: If permitted by regulation, Cover spilled material with a dry acid, such as citric or boric. Scoop up slurry into a large beaker. Dilute wit h a large excess of water. Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Flush reacted material to the drain with a large excess of water. Decontaminate the area of the spill with a soap solution. Otherwise, Pick up spill fo r disposal and place in a closed container Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate local area (15 foot radius or as directed by your facility's emergency response plan) when: any quan tity is spilled. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin clothing Do not breathe mist or vapors. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Protect from: heat Keep away from: acids Flammability Class: Not a pplicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Odorless Odor Threshold: Not applicable pH: >13 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: 0.000 in/yr Aluminum: 0.16 in/yr Specific Gravity/ Relative Density (water = 1; air =1): Not determined Viscosity: Not determined Solubility: Water: Miscible Acid: React ive Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressu re: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: None intentionally added Flammable Properties: Material will not burn. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Prop erties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: May react violently in contact with: strong acids Hazardous Decomposition: No hazardous decomposition products known. Conditions to Avoid: Heat Evaporation ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Corrosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Based on classification principles, the classi fication criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: burns of the mouth and esophagus vomiting rapid pulse and respirations shock collaps e Inhalation: No effects anticipated Skin Absorption: None Reported Chronic Effects: None reported Medical Conditions Aggravated: Pre -existing: Eye conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: Sodium hydroxide: 96 hr Oncorhynchus mykiss LC50 = 45.4 mg/L; 48 h r Daphnia sp. EC50 = 100 mg/L; 48 hr Crustaceans EC50 = 40.4 mg/L CEPA Statement: Sodium hydroxide and Potassium nitrate: Persistent, not bioaccumulative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D002 Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to complet ely flush the system. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringen t state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be dis posed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: N A I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Additional Information: There is a possi bility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would c hange to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acu te) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Sodium Hydroxide 1000 lbs. 304 EHS RQ (40 CFR 355): Not applicable Clean Water Act (40 CFR 116.4): Sodium Hydroxide - RQ = 1000 lbs. (454 kgs.) RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Re gulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): Not applicable California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applica ble National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either lis ted or exempt. ______16. OTHER INFORMATION

References: 29 CFR 1900 - 1910 (Code of Federal Regulations - Labor). Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. In -house information. Technical Judgment. Sax, N. Irving. Dangerous Propert ies of Industrial Materials, 7th Ed. New York: Van Nostrand Reinhold Co., 1989. Complete Text of H phrases referred to in Section 3: H314 Causes severe skin burns and eye damage. Revision Summary: . Substantial revision to comply with EU Reg 127 2/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 01 Month: August Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemp tion from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of C PR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrogen LR TNT Reagent B Catalog Number: TNT826B

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M01975 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of total nitrogen ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Acute Toxicity: Acute Tox. 4 -Orl Skin Corrosion/Irritation: Skin Irrit. 2 Serious Eye Damage/Eye Irritation:Eye Irrit. 2 Respiratory or Skin Sensitization: Skin Sen s.1 Respiratory or Skin Sensitization: Resp. Sens.1 Specific Target Organ Toxicity - Single Exposure: STOT SE 3 Reproductive Toxicity: Repr. 1B GHS Label Elements: DANGER

Hazar d statements: Harmful if swallowed. Causes skin irritation. May cause an allergic skin reaction. Causes serious eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause respiratory irritation. May damage fertility. May damage the unborn child. Precautionary statements: Obtain special instructions before use. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves / protective clothing / eye protection / face protecti on. IF INHALED: If breathing is difficult, remove victim/person to fresh air and keep at rest in a position comfortable for breathing. IF exposed or concerned: Get medical advice/attention. If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician. HMIS: Health: 2 Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 1 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Compo nents according to GHS: Potassium Persulfate

CAS Number: 7727 -21 -1 Chemical Formula: K2S2O8 GHS Classification: Ox. Sol. 3, H272; Acute Tox. 4, H302; Skin Irrit. 2, H315; Skin Sens. 1, H317; Eye Irrit. 2, H319; Resp. Sens. 1 H334; STOT SE 3, H335 Percent Range (Trade Secret): 60.0 - 70.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 5 mg/m 3

WHMIS Symbols: OxidizingOther Toxic Effects Sodium Borate

CAS Number: 1330 -43 -4 Chemical Formula: Na 2B4O7 · 10H 2O GHS Classification: Acute Tox. 5 -Orl, H303; Acute Tox. 5 -Inh, H333; Repr. 1B, H360 Percent Range (Trade Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 2 mg/m 3

WHMIS Symbols: Other Toxic Effects Sodium Metaborate

CAS Number: 7775 -19 -1 . Chemical Formula: BHO 2 Na GHS Classification: Skin Irrit. 2 H315; Eye Irrit. 2 H319; STOT SE 3 H335; Repr. 2, H361 Percent Range (Trad e Secret): 10.0 - 20.0 Percent Range Units: weight / weight PEL: 15 mg/M 3 Total Dust; 5 mg/M 3 Respirable Dust TLV: 10 mg/M 3 Inhalable Particles; 3 mg/M 3 Respirable Particles

WHMIS Symbols: Other Toxic Effects ______4. FIRST AID MEASURES

Flammable Properties: During a fire, corrosive and toxic gases may be generated by thermal decomposition. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Med ia: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: None reported Hazardous Combustion Products: Toxic fumes of: sodium oxides sulfur oxides. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federa l regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or lo cal regulations should respond to a spill involving chemicals. Containment Technique: Stop spilled material from being released to the environment. Cover spilled solid material with sand or other inert material. Clean -up Technique: If permitted by regulation, Remove all combustible materials from the spill area. Cover with an inert material, such as sand. Sweep up material. Work in an approved fume hood. Working in small batches, dilute with excess water. Adjust to a pH between 6 and 9 with a n alkali, such as soda ash or sodium bicarbonate. Filter to remove solids. Flush reacted material to the drain with a large excess of water. Decontaminate the area of the spill with a soap solution. Otherwise, Pick up spill for disposal and place in a closed container Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate local area (15 foot radius or as directed by your facility's emergency response plan) when: any quantity is spilled. If cond itions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin clothing Do not breathe dust. Wash thoroughly after handling. Use with adequate ventilation. Maintain general industrial hygiene practices when using this product. Storage: Store away from: combustible materials Protect from: heat moisture Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Use general ventilation to minimize exposure to mist, vapor or dust. Mai ntain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact wi th: eyes skin clothing Do not breathe: dust Wash thoroughly after handling. Protect from: heat moisture TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: White powder Physical State: Solid Molecular Weight: Not applicable Odor: None Odor Threshold: Odor less pH: Not determined Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): Not determined Viscosity: Not determined Solubility: Water: Soluble Acid: Soluble Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not applicable Vapor Pressure: Not applicable Vapor Density (air = 1): Not applicable Evaporation Rate (water = 1): Not applicable Volatile Organic Compounds Content: Not applicable Flamm able Properties: During a fire, corrosive and toxic gases may be generated by thermal decomposition. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not appli cable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyroph oric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: aluminum reducers Hazardous Decomposition: Heating to decomposition releases toxic and/or corrosive fumes of: sulfur oxides sodium monoxide Conditions to Avoid: Heating to decomposition. Excess moisture ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated fr om Ingredient Toxicity Data ATE Oral Rat LD50 = 1083 mg/kg ATE Dermal Rat LD50 = 10000mg/kg Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Respiratory Trac t Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Irritating to skin. Eye Damage: Irritating to eyes. Sensitization: Respira tory Sensitizer Skin Sensitizer CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): Reported impairment of fertility by substance or ingredient of mixture. Reproductive toxicity has been reported. This product does NOT co ntain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: gastrointestinal tract irritation nausea vomiting diarrhea muscular twitching lethargy circulatory disturbances central nervous system effects shock kidney damage Inhalation: May cause: irritation of nose and throat allergic respiratory reaction Skin Absorption: Will be absorbed through a braded or broken skin. Effects similar to those of ingestion Chronic Effects: Chronic overexposure may cause allergic respiratory reactions allergic skin reactions weight loss anemia Medical Conditions Aggravated: Pre -existing: Eye conditions Skin conditions Respiratory conditions Allergies or sensitivity to potassium persulfate. ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: -- No ecological data available for the ingredients of this product. CEPA categorization for each and every ingredient: Persistent ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Dilute material with excess w ater making a weaker than 5% solution. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the material to the drain. Allow cold water to run for 5 minutes to completely flus h the system. Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Cur rently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated -- Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated -- Hazard C lass: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does n ot apply. ______15. REGULATORY INFORMATION U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication S tandard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 355): Not a pplicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Numb er: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are lis ted. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All co mponents either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: NIOSH Registry of Toxic E ffects of Chemical Substances, 1985 -86. Cincinnati: U.S. Department of Health and Human Services, April, 1987. Vendor Information. Sax, N. Irving and Richard J. Lewis, Sr., revised by. Hawley's Condensed Chemical Dictionary, Eleventh Ed. New York: V an Nostrand Reinhold Co., 1987. Gosselin, R. E. et al. Clinical Toxicology of Commercial Products, 5th Ed. Baltimore: The Williams and Wilkins Co., 1984. In -house information. Technical Judgment. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Complete Text of H phrases referred to in Section 3: H302 Harmful if swallowed. H315 Causes skin irritation. H317 May cause an allergic skin reaction. H319 Causes serious eye irritation. H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled. H335 May cause respiratory irritati on. H360FD May damage fertility. May damage the unborn child. Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 01 Month: August Year: 20 14 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the in terim policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3) . This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weig ht/volume NV - Not Available v/v - volume/volume USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and regulations .

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrogen LR TNT Reagent C Catalog Number: TNT826C

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M02448 Che mical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of total nitrogen ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: . Acute Toxicity: Acute Tox. 4 -Orl Hazardous to the Aquatic Environment: Aquatic Chronic 3 GHS Label Elements: WARNING

Hazard statements: Harmful if swallowed. . Harmful to aquatic life with long lasting effects. Contact with acids liberates toxic gas. Precautionary statements: Handle environm ental release according to local, state, federal, provincial requirements. Wear protective gloves / protective clothing / eye protection / face protection. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. HMIS: Health: 2 Fl ammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 2 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class D, Division 2, Subdivision B - Toxic materia l (other toxic effects) WHMIS Symbols: Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS

Hazardous Components according to GHS: Sodium Sulfite

CAS Numb er: 7757 -83 -7 Chemical Formula: Na 2SO 3 GHS Classification: Acute Tox. 5 -Orl, H303; Acute Tox. 5 -Derm, H313; Acute Tox. 5 -Inh, H333; Aquatic Acute 3, H402; Percent Range (Trade Secret): 80.0 - 90.0 Percent Range Units: weight / weight PEL: 15 mg/m 3 as inhalable dust; 5 mg/m 3 as respirable dust TLV: 10 mg/m 3 as inhalable dust

WHMIS Symbols: Other Toxic Effects Sodium Azide

CAS Number: 26628 -22 -8 Chemical Formula: NaN 3 GHS Classification: Acute Tox. 2 -Orl, H300; Aquatic acute 1, H400; Aquatic chronic 1, H410 Percent Range (Trade Secret): 0.1 - 1.0 Percent Range Units: weight / weight PEL: Not established TLV: C: 0.29 mg/m 3 as Sodium azide; C 0.11 ppm as Hydrazoic acid vapor

WHMIS Symbols: Acute Poison Hazardous Components according to GHS: No Dextran

WHMIS Symbols: Other Toxic Effects ______4. FIRST AID MEASURES

Flammable Properties: Does not burn, but may melt in a fire, releasing toxic fumes. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full pro tective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: This product will not burn or explode. Hazardous Combustion Products: carbo n monoxide, carbon dioxide. nitrogen oxides. sulfur oxides. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emerg ency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance . Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Stop spilled material from being released to the environment. Clean -up Technique: Never put unreacted azides down the drain! Avoid contact with spilled material. If permitted by regulation, Sweep up material. Dispose of material in government approved hazardous waste facility. Otherwise, Pick up spill for disposal and place in a closed container Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate as needed to perform spill clean -up. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Gui de Number: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin Do not breathe dust. Wash thoroughly after handling. Maintain general industri al hygiene practices when using this product. Storage: Keep container tightly closed when not in use. Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL P ROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: safety glasses with top and side shields Skin Protection: disposable latex gloves In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin Do not breathe: dust Wash thoroughly after handling. TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: White Physical State: Solid Molecular Weight: Not applicable Odor: Odorless Odor Threshold: Not applicable pH: Solution: pH 10 @ 20º C Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): Not determined Viscosity: Not determined Solubility: Water: Complete Acid: Reactive Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not de termined Boiling Point: Not applicable Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: 15 -20% (non -volatile) Flammable Properties: Does no t burn, but may melt in a fire, releasing toxic fumes. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not determined Upper Explosion Limits: Not determined Autoignition Temperature: Not determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting fla mmable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: None reported. Reactivity / Incompatibility: Incompatible with: acids oxidizers Hazardous Decomposition: Heating to decomposit ion releases: sulfur oxides carbon monoxide carbon dioxide nitrogen oxides Conditions to Avoid: Heating to decomposition. Excess moisture ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data ATE Oral Rat LD5 0 = 1805 mg/kg ATE Dermal Rat LD50 = 3044 mg/kg ATE Inhalation Rat LC50 = 6783.3 mg/l Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Based on classification principles, the classification criteria are not met. Eye Dam age: Based on classification principles, the classification criteria are not met. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction) : No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: a bdominal pain diarrhea colic circulatory disturbances central nervous system depression allergic reaction Inhalation: May cause: respiratory tract irritation sore throat coughing allergic respiratory reaction Skin Absorption: None Reported Chronic Effects: None reported Medical Conditions Aggravated: Sulfites are strong sensitizers. Inhalation and ingestion may cause allergic respiratory reactions in asthmatics. Persons with respiratory conditions should take special care when wor king with products that contain sulfites. Pre -existing: Eye conditions Skin conditions ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological dat a available for this product. Mobility in soil: No data available Ingredient Ecological Information: Sodium sulfite: 96 hr Leuciscus idus LC50 = 170 -370 mg/L; 48 hr Daphnia magna EC50 = 18 mg/L; Chlamydomonas reinhardtii EC50 = 63 -126 mg/L; Sodium Az ide: 96 hr Oncorhynchus mykiss LC50 = 0.8 mg/L; 96 hr Lepomis macrochirus LC50 = 0.68 mg/L; 48 hr Daphnia pulex EC50 = 4.2 mg/L; 96 hr Selenastrum capricornutum ErC50 = 0.348 mg/L CEPA Statement: Sodium sulfite: Persistent, not bioaccumulative or inhere ntly toxic to aquatic orgamisms; Sodium azide: Persistent, inherently toxic to aquatic orgamisms, not bioaccumulative. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: Not applicable Special Instructions (Disposal): Never put unreacted azides down the drain! Work in an approved fume hood. Dilute material with excess water making a weaker than 5% solution. Add an excess of 20% sodium nitrite solution and mix well . Slowly acidify the solution with sulfuric acid with constant stirring. Nitrogen oxide gas will evolve until the reaction is complete. Test for complete reaction with starch -iodine paper, it should turn blue. Open cold water tap completely, slowly pou r the material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Verification should be made that such disposal is not inconsistent with any pretreatment agreement your facility may have with the wastewater treatment fac ility. Empty Containers: Rinse three times with an appropriate solvent. Rinsate from empty containers may contain sufficient product to require disposal as hazardous waste. NOTICE (Disposal): These disposal guidelines are based on federal regulati ons and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national r egulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA T.D.G.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA UN Number/PIN: NA Packing Group: NA I.C.A.O.: I.C.A.O. Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA I.M.O.: Proper Shipping Name: Not Currently Regulated Hazard Class: NA Subsidiary Risk: NA ID Number: NA Packing Group: NA Additional Information: There is a possibili ty that this product could be contained in a reagent set or kit composed of various compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would chang e to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Sodi um Azide 500 lbs. 304 CERCLA RQ (40 CFR 302.4): Sodium azide 1000 lbs. 304 EHS RQ (40 CFR 355): Sodium Azide - RQ 1000 lbs. Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains no RCRA regulated substances. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Invento ries: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Statu s: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

References: Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. In -house information. Technical Judgment. TL V's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industrial Hygienists, 1992. Complete Text of H phrases referred to in Section 3: H302 Harmful if swallowed. H412 Harmful to aquatic life wi th long lasting effects. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 01 Month: August Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that wa s established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

THE INF ORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrogen LR TN T Reagent D Catalog Number: TNT826D

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M01920 Chemical Name: Not applicable CAS Number: Not applicable Additional CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Determination of nitrate ______2. HAZARDS IDENTIFICATION

Hazard statements: Flammable liquid and vapour. Causes serious eye irritation. May cause drowsiness or dizziness. Precautionary statements: Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves / protective clothing / eye protection / face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Cont inue rinsing. If eye irritation persists: Get medical advice/attention. HMIS: Health: 2 Flammability: 2 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 2 Flammability: 2 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class B, Division 3 - Combustible liquids Class D, Division 2, Subdivision B - Toxic material (other toxic effects) WHMIS Symbols: Flammable / Combustible Other Toxic Effects ______3. COMPOSITION / INFORMATION ON INGREDIENTS Hazardous Components according to GHS: Isopropanol

CAS Number: 67 -63 -0 Chemical Formula: C3H8O GHS Classification: Percent Range (Trade Secret): 15.0 - 25.0 Percent Range Units: weight / weight PEL: 400 ppm (980 mg/m 3) TLV: 200 ppm (492 mg/m 3)

WHMIS Symbols: Flammable / CombustibleOther Toxic Effects Isoamyl acetate

CAS Number: 123 -92 -2 Chemical Formula: C7H14 O2 GHS Classification: Flam. Liq. 3, H226; Skin Irrit. 3, H316; Eye Irrit. 2B, H320; STOT Single 3, H335; Aq. Acute 3, H402 Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / weight PEL: OSHA 8 hr TWA: 100 ppm TLV: ACGIH TWA: 50 ppm; STEL: 100 ppm

WHMIS Symbols: Flammable / Combustible 2,6 -Dimethylphenol

WHMIS Symbols: Acute PoisonCorrosive Hazardous Components according to GHS: No Demineralized Water

CAS Number: 7732 -18 -5 Chemical Formula: H2O GHS Classificati on: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 75.0 - 85.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable Other components, each

CAS Number: Not applicable Chemical Formula: Not applicable. GHS Classification: Not applicable Percent Range (Trade Secret): < 1.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES General Information: In the event of exposure, show this Material Safety Data Sheet and label (where possible) to a doctor. Advice to doctor: Treat symptomatically. Eye Contact: Immediately flush eyes with water for 15 minutes. Call physician. Skin Contact (First Aid): Wash skin with plenty of water. Call physician if irritation develops. Remove contaminated clothing. Inhalation: Remove to fresh air. Gi ve artificial respiration if necessary. Call physician. Ingestion (First Aid): Give large quantities of water. Call physician immediately. Never give anything by mouth to an unconscious person. ______5. FIRE FIGHTING MEASURES

Flammable Properties: Combustible Liquid Can burn in fire, releasing toxic vapors. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full prote ctive gear. Extinguishing Media: Water. Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: May react violently with: oxidizers Combustible liquid May ignite on contact with: heat sparks, flame, or other ignition sources Hazardous Combustion Products: carbon monoxide, carbon dioxide. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910.120( a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Absorb spilled liquid with non -reactive sorbent material. Stop spilled material from being released to the environment. Clean -up Technique: If permitted by regulation, Absorb spilled liquid with n on -reactive sorbent material. Incinerate material at a government approved hazardous waste facility. Decontaminate the area of the spill with a soap solution. Otherwise, Dispose of in accordance with local, state and federal regulations or laws. Evac uation Procedure: Evacuate local area (15 foot radius or as directed by your facility's emergency response plan) when: a gallon or more of liquid is spilled. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Num ber: Not applicable ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin Do not breathe mist or vapors. Wash thoroughly after handling. Maintain general indu strial hygiene practices when using this product. Storage: Protect from: heat Keep away from: sparks, flames and other ignition sources Flammability Class: Class II ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: chemical splash goggles Skin Protection: disposable latex glov es In the EU, the selected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin Wash thoroughly after handling. Protect from: heat Keep away from: sparks, flames and other ignition sources TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/Information on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES Appearance: Clear, color less liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Alcoholic Odor Threshold: Not determined pH: 5.5 Metal Corrosivity: Corrosivity Classification: Not classified as corrosive to metals according to GHS criteria. Stee l: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 0.95 Viscosity: Not determined Solubility: Water: Miscible Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water ): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: 82° C 180° F Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: Not determined Flammable Properties: Combustible Liquid Can burn in fire, releasing toxic vapors. Flash Point: 26° C 79° F Method: Closed cup Flammability Limits : Lower Explosion Limits: Not determined Upper Explosion Limits: Not determined Autoignition Temperature: Not determined Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Discharge: Not applicable Reactivi ty / Incompatibility: Incompatible with: strong acids oxidizers Hazardous Decomposition: Heating to decomposition releases: carbon monoxide carbon dioxide Conditions to Avoid: Extreme temperatures Evaporation Contact with heat, sparks, open flames or other ignition sources. Exposure to air. ______11. TOXICOLOGICAL INFORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data ATE Oral Rat LD50 = 16066 mg/kg ATE Dermal Rat LD50 = 44235 m g/kg ATE Inhalation LC50 = 226.7 mg/l Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Respiratory Tract Central nervous system Kidneys Specific Target Orga n Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Based on classification principles, the classification criteria are not met. Eye Damage: Irritating to eyes. Sensitization: Based on classification principles, the classification criteria are not met. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. This product does NOT contain any IARC listed chemicals. This product does NOT contain any NTP listed chemicals. This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: irritation of th e mouth and esophagus Very large doses may cause: drunkenness nausea vomiting blood pressure problems rapid pulse and respirations Inhalation: May cause: irritation of nose and throat Skin Absorption: None Reported Chronic Effects: None reported Medical Conditions Aggravated: Pre -existing: Eye conditions Impaired pulmonary function such as obstructive airway diseases. ______12. ECOLOGICAL INFORMATION

Product Ecological Information: -- No ecological data available for this product. Mobility in soil: No data available Ingredient Ecological Information: Isopropanol: LD50 goldfish 5,000 mg/L/24 hr, LC50 brown shrimp 1,400 mg/L/48 hr, LC50 brown sh rimp 1150 mg/L/96 hr,LC50 fathead minnows 11,160 mg/L/24 hr, cell multiplication test Microcystis aeruginosa (algae) 1,000 mg/L No ecological data available for the ingredients of this product. CEPA Statement: 2 -Propanol: Persistent, not bioaccumu lative or inherently toxic to aquatic organisms. ______13. DISPOSAL CONSIDERATIONS

EPA Waste ID Number: D001 Special Instructions (Disposal): Dilute to 3 to 5 times the volum e with cold water. Adjust to a pH between 6 and 9 with an acid, such as sulfuric or citric. Open cold water tap completely, slowly pour the reacted material to the drain. Allow cold water to run for 5 minutes to completely flush the system. Empty Cont ainers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Pl ease consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the respective national regulations. Product packaging must be disposed of in compliance with the co untry -specific regulations or must be passed to a packaging return system. ______14. TRANSPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Alcohol, N.O.S. (Isopropanol S olution) Hazard Class: 3 Subsidiary Risk: NA ID Number: UN1987 Packing Group: III T.D.G.: Proper Shipping Name: Alcohol, N.O.S. (Isopropanol Solution) Hazard Class: 3 Subsidiary Risk: NA UN Number/PIN: 1987 Packing Group: III I.C.A.O.: I.C.A.O. Proper Shipping Name: Alcohols, N.O.S. (Isopropanol Solution) Hazard Class: 3 Subsidiary Risk: NA ID Number: UN1987 Packing Group: III I.M.O.: Proper Shipping Name: Alcohol, N.O.S. (Isopropanol Solution) Hazard Class: 3 Subsidiary Risk: NA ID Number: UN1987 Packing Group: III Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of various compatible d angerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, t he Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION

U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardous substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Fire Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Not applicable 304 CERCLA RQ (40 CFR 302.4): Not applicable 304 EHS RQ (40 CFR 355): Not a pplicable Clean Water Act (40 CFR 116.4): Not applicable RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste ID Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identifi cation of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Jap an (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either listed or exempt. ______16. OTHER INFORMATION

Refer ences: Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. In -house information. Technical Judgment. TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Gove rnmental Industrial Hygienists, 1992. Outside Testing. Complete Text of H phrases referred to in Section 3: H226 Flammable liquid and vapour. H319 Causes serious eye irritation. H336 May cause drowsiness or dizziness. Revision Summary: Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 03 Month: August Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CC OHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the interim policy that was established by Health Canada permitting use of GHS -formatted saf ety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/ 36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

______1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

Product Name: Nitrogen LR TNT Reagent Vial Catalog Number: TNT826R

Hach Company Emergency Telephone Numbers: P.O.Box 389 (Medical and Transportation) Loveland, CO USA 80539 (303) 623 -5716 24 Hour Service (970) 669 -3050 (515)232 -2533 8am - 4pm CST

MSDS Number: M01749 Chemical Name: Not applicable CAS Number: Not applicable Additio nal CAS No. (for hydrated forms): Not applicable Chemical Formula: Not applicable Chemical Family: Not applicable Intended Use: Laboratory Reagent Determination of nitrate ______2. HAZARDS IDENTIFICATION

GHS Classification: Hazard categories: Corrosive to Metals: Met. Corr. 1 . Skin Corrosion/Irritation: Skin Corr. 1A GHS Label Elements: DANGER

Hazard statements: May be corrosive to metals. . Causes severe skin burns and eye damage. Precautionary statements: Wear protective gloves / protective clothing / eye protection / face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF ON SKIN (or ha ir): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. HMIS: Health: 3* Flammability: 0 Reactivity: 0 Protective Equipment: X - See protective equipment, Section 8. NFPA: Health: 3 Flammability: 0 Reactivity: 0 Symbol: Not applicable WHMIS Hazard Classification: Class E - Corrosive material Class D, Division 1, Subdivision B - Toxic material (immediate effects) WHMIS Symbols: Corrosive Acute Poison ______3. COMPOSITION / INFORMATION ON INGRED IENTS Hazardous Components according to GHS: Sulfuric acid

WHMIS Symbols: Acute PoisonCorrosive Phosphoric Acid

CAS Number: 7664 -38 -2 Chemical Formula: H3PO 4 GHS Classification: Met. Corr. 1, H290; Acute Tox. 4 -Orl, H302; Acute Tox. 5 -Derm , H313; Skin Corr. 1B, H314; Eye Dam. 1, H318 Percent Range (Trade Secret): 25.0 - 35.0 Percent Range Units: weight / weight PEL: 1 mg/m 3 TLV: 1 mg/m 3

WHMIS Symbols: Corrosive Hazardous Components according to GHS: No Demineralized Water

CAS Nu mber: 7732 -18 -5 Chemical Formula: H2O GHS Classification: Not a dangerous substance according to GHS. Percent Range (Trade Secret): 1.0 - 10.0 Percent Range Units: weight / weight PEL: Not established TLV: Not established

WHMIS Symbols: Not applicable ______4. FIRST AID MEASURES

Flammable Properties: Not Flammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may b e generated by thermal decomposition. Fire Fighting Instruction: As in any fire, wear self -contained breathing apparatus pressure -demand and full protective gear. Extinguishing Media: Use media appropriate to surrounding fire conditions Extinguishing Media NOT To Be Used: Not applicable Fire / Explosion Hazards: Contact with metals gives off hydrogen gas which is flammable Hazardous Combustion Products: This material will not burn. ______6. ACCIDENTAL RELEASE MEASURES

Spill Response Notice: Only persons properly qualified to respond to an emergency involving hazardous substances may respond to a spill according to federal regulations (OSHA 29 CFR 1910 .120(a)(v)) and per your company's emergency response plan and guidelines/procedures. See Section 13, Special Instructions for disposal assistance. Outside of the US, only persons properly qualified according to state or local regulations should respond to a spill involving chemicals. Containment Technique: Absorb spilled liquid with non -reactive sorbent material. Stop spilled material from being released to the environment. Clean -up Technique: If permitted by regulation, Cover spilled material with a dry acid, such as citric or boric. Scoop up slurry into a large beaker. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Flush reacted material to the dra in with a large excess of water. Decontaminate the area of the spill with a soap solution. Otherwise, Dispose of in accordance with local, state and federal regulations or laws. Evacuation Procedure: Evacuate local area (15 foot radius or as directe d by your facility's emergency response plan) when: any quantity is spilled. If conditions warrant, increase the size of the evacuation. DOT Emergency Response Guide Number: 154 ______7. HANDLING AND STORAGE

Handling: Avoid contact with eyes skin clothing Do not breathe mist or vapors. Wash thoroughly after handling. Maintain general industrial hygiene practices when using this product. Storage: Keep away from: meta ls Protect from: heat Flammability Class: Not applicable ______8. EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls: Maintain adequate ventilation to keep vapor le vel below TWA for chemicals in this product. Maintain general industrial hygiene practices when using this product. Personal Protective Equipment: Eye Protection: chemical splash goggles Skin Protection: disposable latex gloves In the EU, the se lected gloves must satisfy the specifications of EU Directive 89/686/EEC and standard EN 374 derived from it. lab coat Inhalation Protection: adequate ventilation Precautionary Measures: Avoid contact with: eyes skin clothing Do not breathe: mist/vapor Wash thoroughly after handling. Use with adequate ventilation. Protect from: heat Keep away from: metals TLV: Not established PEL: Not established For Occupational Exposure Limits (OEL) for ingredients, see section 3 - Composition/In formation on Ingredients.: ______9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance: Clear, colorless liquid Physical State: Liquid Molecular Weight: Not applicable Odor: Acidic Odor Threshold: Not available pH: <1 Metal Corrosivity: Corrosivity Classification: Classified as corrosive to metals. Steel: Not determined Aluminum: Not determined Specific Gravity/ Relative Density (water = 1; air =1): 1.3 Viscos ity: Not determined Solubility: Water: Miscible Acid: Not determined Other: Not determined Partition Coefficient (n -octanol / water): Not applicable Coefficient of Water / Oil: Not applicable Melting Point: Not determined Decomposition Temperature: Not determined Boiling Point: Not determined Vapor Pressure: Not determined Vapor Density (air = 1): Not determined Evaporation Rate (water = 1): Not determined Volatile Organic Compounds Content: Not applicable Flamm able Properties: Not Flammable, but reacts with most metals to form flammable hydrogen gas. During a fire, corrosive and toxic gases may be generated by thermal decomposition. Flash Point: Not applicable Method: Not applicable Flammability Limits: Lower Explosion Limits: Not applicable Upper Explosion Limits: Not applicable Autoignition Temperature: Not applicable Explosive Properties: Not classified according to GHS criteria. Oxidizing Properties: Not classified according to GHS criteria. Reactivity Properties: Not classifed as self -reactive, pyrophoric, self -heating or emitting flammable gases in contact with water according to GHS criteria. Gas under Pressure: Not classified according to GHS criteria. Not determined ______10. STABILITY AND REACTIVITY

Chemical Stability: Stable when stored under proper conditions. Mechanical Impact: None reported Static Di scharge: None reported. Reactivity / Incompatibility: May react violently in contact with: strong bases sulfites Incompatible with: plastics Hazardous Decomposition: Contact with metals may release flammable hydrogen gas. Heating to decomposit ion releases toxic and/or corrosive fumes of: phosphorus oxides Conditions to Avoid: Excess moisture Extreme temperatures Heating to decomposition. ______11. TOXICOLOGICAL INF ORMATION

Toxicokinetics, Metabolism and Distribution: No information available for mixture. Toxicologically Synergistic Products: None reported Acute Toxicity: Acute Toxicity Estimate (ATE) - Calculated from Ingredient Toxicity Data ATE Oral Rat LD50 = 3610 mg/kg Specific Target Organ Toxicity - Single Exposure (STOT -SE): Based on classification principles, the classification criteria are not met. Specific Target Organ Toxicity - Repeat Exposure (STOT -RE): Based on classification principles, the classification criteria are not met. Skin Corrosion/Irritation: Corrosive to skin. Eye Damage: Corrosive to eyes. Sensitization: Based on classification principles, the classification criteria are not m et. CMR Effects/Properties (carcinogenic, mutagenic or toxic to reproduction): No germ cell mutagenicity, carcinogenicity or reproductive toxicity data found. An ingredient of this mixture is: IARC Group 1: Recognized Carcinogen Sulfuric A cid - The IARC evaluation was based on exposure to the mist or vapor of concentrated sulfuric acid generated during chemical processes. NTP Listed Group 1: Recognized Carcinogen Sulfuric Acid Mist or Vapor This product does NOT contain any OSHA listed carcinogens. Symptoms/Effects: Ingestion: May cause: abdominal pain nausea vomiting collapse death Causes: severe burns Inhalation: May cause: coughing difficult breathing chest pain irritation of nose and throat Causes: s evere burns Skin Absorption: None Reported Chronic Effects: Chronic overexposure may cause dermatitis chronic irritation or inflammation of the lungs cancer Medical Conditions Aggravated: Persons with impaired liver, kidney or respiratory fu nction may be more susceptible to the effects of Phosphoric Acid. Pre -existing: Eye conditions Skin conditions ______12. ECOLOGICAL INFORMATION

EPA Waste ID Number: D002 Special Instructions (Disposal): Dilute to 3 to 5 times the volume with cold water. Adjust to a pH between 6 and 9 with an alkali, such as soda ash or sodium bicarbonate. Open cold water tap completely, slowly pour the reacted material to the drain. A llow cold water to run for 5 minutes to completely flush the system. Otherwise, Empty Containers: Rinse three times with an appropriate solvent. Dispose of empty container as normal trash. NOTICE (Disposal): These disposal guidelines are based on federal regulations and may be superseded by more stringent state or local requirements. Please consult your local environmental regulators for more information. In Europe: Chemical and analysis solutions must be disposed of in compliance with the resp ective national regulations. Product packaging must be disposed of in compliance with the country -specific regulations or must be passed to a packaging return system. ______14. TRAN SPORT INFORMATION

D.O.T.: D.O.T. Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Sulfuric Acid/Phosphoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: II T.D.G.: Proper Shi pping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Sulfuric Acid/Phosphoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA UN Number/PIN: 3264 Packing Group: II I.C.A.O.: I.C.A.O. Proper Shipping Name: Corrosive Liquid, A cidic, Inorganic, N.O.S. (Sulfuric Acid/Phosphoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: II I.M.O.: Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Sulfuric Acid/Phosphoric Acid Mixture) Hazard Class: 8 Subsidiary Risk: NA ID Number: UN3264 Packing Group: II Additional Information: There is a possibility that this product could be contained in a reagent set or kit composed of vari ous compatible dangerous goods. If the item is NOT in a set or kit, the classification given above applies. If the item IS part of a set or kit, the classification would change to the following: UN3316 Chemical Kit, Class 9, PG II or III. If the item is not regulated, the Chemical Kit classification does not apply. ______15. REGULATORY INFORMATION U.S. Federal Regulations: O.S.H.A.: This product meets the criteria for a hazardo us substance as defined in the Hazard Communication Standard. (29 CFR 1910.1200) E.P.A.: S.A.R.A. Title III Section 311/312 Categorization (40 CFR 370): Immediate (Acute) Health Hazard Delayed (Chronic) Health Hazard S.A.R.A. Title III Section 313 (40 CFR 372): This product does NOT contain any chemical subject to the reporting requirements of Section 313 of Title III of SARA. -- 302 (EHS) TPQ (40 CFR 355): Sulfuric Acid 1000 lbs. 304 CERCLA RQ (40 CFR 302.4): Phosphoric acid 5000 lbs . Sulfuric Acid 1000 lbs. 304 EHS RQ (40 CFR 355): Sulfuric Acid - RQ 1000 lbs. Clean Water Act (40 CFR 116.4): Phosphoric acid - RQ 5000 lbs. Sulfuric acid - RQ 1000 lbs. RCRA: Contains RCRA regulated substances. See Section 13, EPA Waste I D Number. State Regulations: California Prop. 65: No Prop. 65 listed chemicals are present in this product. Identification of Prop. 65 Ingredient(s): None California Perchlorate Rule CCR Title 22 Chap 33: Not applicable Trade Secret Registry: Not applicable National Inventories: U.S. Inventory Status: All ingredients in this product are listed on the TSCA 8(b) Inventory (40 CFR 710). CAS Number: Not applicable Canadian Inventory Status: All ingredients of this product are DSL Listed. EEC Inventory Status: All ingredients used to make this product are listed on EINECS / ELINCS. Australian Inventory (AICS) Status: All ingredients are listed. New Zealand Inventory (NZIoC) Status: All components either listed or exempt. Korean Inventory (KECI) Status: All components of this product are either listed, listed as the anhydrous compound or exempt. Japan (ENCS) Inventory Status: All components either listed or exempt. China (PRC) Inventory (MEP) Status: All components either li sted or exempt. ______16. OTHER INFORMATION

References: TLV's Threshold Limit Values and Biological Exposure Indices for 1992 -1993. American Conference of Governmental Industria l Hygienists, 1992. Air Contaminants, Federal Register, Vol. 54, No. 12. Thursday, January 19, 1989. pp. 2332 -2983. Technical Judgment. Vendor Information. Complete Text of H phrases referred to in Section 3: H290 May be corrosive to metals. Not applicable H314 Causes severe skin burns and eye damage. Revision Summary: . Substantial revision to comply with EU Reg 1272/2008, Reg 1907/2006 and UN GHS ( ST/SG/AC.10/36/Add.3). Date of MSDS Preparation: Day: 18 Month: February Year: 2014 MSDS Prepared: MSDS prepared by Product Compliance Department extension 3350 CCOHS Evaluation Note: It is offered under exemption from WHMIS labeling as specified in the Controlled Products Regulation (CPR) Section 17. It is offered under the inter im policy that was established by Health Canada permitting use of GHS -formatted safety data sheets in Canada prior to revision of CPR to GHS. This product has been classified and labeled in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). This SDS has been prepared in accordance with the requirements of GHS (ST/SG/AC.10/36/Add.3). ______

Legend: NA - Not Applicable w/w - weight/weight ND - Not Determined w/v - weight/volume NV - Not Available v/v - volume/volume

USER RESPONSIBILITY: Each user should read and understand this information and incorporate it in individual site safety programs in accordance with applicable hazard communication standards and r egulations. THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED TO BE ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE OBTAINED FROM THE USE THEREOF.