Components: Nb2o5 : Niobium Oxide Nb2o5, Powder and Pieces Ta2o5 : Tantalum Oxide, Powder and Pieces K : Potassium Metal, Pieces

MSDS Name: KJL114 Manufacturer Name: Kurt J. Lesker Company

Components: Nb2O5 : Niobium oxide Nb2O5, powder and pieces Ta2O5 : Tantalum oxide, powder and pieces K : Potassium metal, pieces

KJLC Code: EJTKTNO303A2 Kurt J. Lesker Company

Niobium oxide Nb2O5, powder and pieces

Manufacturer MSDS Number: Nb2O5

SECTION 1 : Chemical Product and Company Identification

MSDS Name: Niobium oxide Nb2O5, powder and pieces Manufacturer Name:Kurt J. Lesker Company Address: P.O. Box 10 1925 Route 51 Clairton, PA 15025

For emergencies in the US, call CHEMTREC: 800−424−9300 Other Phone: US National Poison Hotline: (800)222−1222 Manufacturer MSDS Creation Date: 06/22/2006 Manufacturer MSDS Revision Date: 06/25/2008 Synonyms: Niobium oxide; niobium pentoxide; columbium pentoxide Chemical Family: Metal oxide Chemical Formula: Nb2O5 Molecular Weight: 265.81 DOT HAZARD LABEL Not Hazardous for DOT Product Codes: Nb2O5

SECTION 2 : Hazardous Ingredients/Identity Information Chemical Name CAS# % Weight Niobium oxide 1313−96−8 0.0 −100.0 %

1 Chemical Name CAS# % Weight See SECTION IX−ADDITIONAL NA 0.0 −100.0 % COMMENTS FOR COSHH Regulations

SECTION 3 : Physical And Chemical Characteristics Physical State/Appearance: White powder and pieces, no odor. Physical State: [ ] Gas , [ ] Liquid , [ X ] Solid pH: No data. Vapor Pressure: No data. (VS. AIR OR MM HG) Vapor Density: No data. (VS. AIR = 1) Boiling Point: N.A. Melting Point: 1480.00 deg C (2696.0 deg F) to 1520.00 deg C (2768.0 deg F) Solubility In Water: insoluble Specific Gravity: 4.47 gm/cc at 20.0 C (68.0 F) (WATER = 1) Density: No data. Evaporation Point: No data. (VS BUTYL ACETATE=1) Percent Volatile: N.A. FlashPoint: N.A. Upper Flammable Explosive Limit: NA Lower Flammable Explosive Limit: NA

SECTION 4 : Fire And Explosion Hazards Flash Point: N.A. Flash Point Method: No data. Upper Flammable or Explosive Limit: NA Lower Flammable or Explosive Limit: NA Extinguishing Media: Not applicable. Use suitable extinguishing media for surrounding materials and type of fire. Fire Fighting Instructions: Firefighters must wear full face, self−contained breathing apparatus with full protective clothing to prevent contact with skin and eyes. Fumes from fire are hazardous. Isolate runoff to prevent environmental pollution. Unusual Fire Hazards:

2 Niobium oxide may emit toxic fumes if involved in a fire.

SECTION 5 : Health Hazards

Applies to All Ingredients: Route of Exposure: Inhalation? Yes , Skin? Yes , Eyes? Yes , Ingestion? No , Other: N Potential Health Effects: Eye Contact: May cause irritation. Skin Contact: May cause irritation. Inhalation: May cause irritation to the nose and throat. Ingestion: No acute health effects recorded. Chronic Eye Contact:a No chronic health effects recorded. Chronic Skin Contact: No chronic health effects recorded. Chronic Inhalation: May cause kidney damage and fibrogenic effects on the lungs. Chronic Ingestion: No chronic health effects recorded. Carcinogenicity: NTP? No , IARC Monographs? No , OSHA Regulated? No Target Organs: May affect the kidneys and lungs. Signs/Symptoms: INHALATION: May cause a red, dry, sore throat. INGESTION: No acute or chronic health effects recorded. SKIN: May cause redness and inflammation. EYE: May cause redness, itching and watering. Other Potential Health Effects: CARCINOGENICITY/OTHER INFORMATION: No data available. Aggravation of Pre−Existing Conditions: Pre−existing respiratory disorders. See "Section II" LD 50/LC 50: orl−mus LD50: >4000 mg/kg

SECTION 6 : Emergency And First Aid Procedures Physical Health Hazard: HEALTH HAZARDS (ACUTE AND CHRONIC): To the best of our knowledge the chemical, physical and toxicological properties of niobium oxide have not been thoroughly investigated and recorded. Eye Contact: Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention if symptoms persist. Skin Contact: Remove contaminated clothing; brush material off skin; wash affected area with mild soap and water; seek medical attention if symptoms persist. Inhalation: Remove victim to fresh air; keep warm and quiet; give oxygen if breathing is difficult and seek medical attention. Ingestion: Give 1−2 glasses of milk or water and induce vomiting; seek medical attention. Never induce vomiting or give anything by mouth to an unconscious person. Note to Physicians: No data available.

3 SECTION 7 : Reactivity Data Chemical Stability: Unstable [ ] Stable [ X ] Conditions to Avoid: CONDITIONS TO AVOID − INSTABILITY: None; CONDITIONS TO AVOID − HAZARDOUS POLYMERIZATION: None Incompatibilities with Other Materials: Strong acids and bases Hazardous Polymerization: Will occur [ ] Will not occur [ X ] Hazardous Decomposition Products: None recorded

SECTION 8 : Precautions For Safe Handling Spill Cleanup Measures: Wear appropriate respiratory and protective equipment specified in section VIII−control measures. Isolate spill area, provide ventilation and extinguish sources of ignition. Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust. Use non−sparking tools. Other Precautions: None HAZARD LABEL INFORMATION: Store in cool, dry area Store in tightly sealed container Wash thoroughly after handling

Handling: None Storage: None Hygiene Practices: WORK/HYGIENIC/MAINTENANCE PRACTICES: Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating and smoking. Do not blow dust off clothing or skin with compressed air.

Waste Disposal: Dispose of in accordance with local, state and federal regulations.

SECTION 9 : Control Measures Ventilation System: If user operations generate dust, fume or mist, use ventilation to keep exposure low to airborne contaminants. Hand Protection Description: Rubber gloves Eye/Face Protection: Safety glasses Protective Clothing/Body Protection: Protective gear suitable to prevent contamination Respiratory Protection: NIOSH − approved respirator

NIOSH approved respirator Impervious gloves Safety glasses Clothes to prevent skin contact Ingredient Guidelines

4 Ingredient: Niobium oxide Guideline Information: ACGIH TLV: NE; OSHA PEL: NE; OTHER LIMITS: NE Ingredient: See SECTION IX−ADDITIONAL COMMENTS FOR COSHH Regulations Guideline Information: ACGIH TLV: No data.; OSHA PEL: No data.; OTHER LIMITS: No data.

SECTION 10 : Other Information Niobium oxide: Section 302: No Section 304: No Section 313 Toxic Release Form: No

MSDS Revision Date: 06/25/2008 Disclaimer: Kurt J. Lesker Company (“KJLC”) believes the information contained in this Material Safety Data Sheet is accurate as of the “Date of Last Revision” specified. The information relates only to typical properties of the product. Do not use the information for product performance or specification purposes. The information is for use by technically skilled persons at their own risk. KJLC MAKES NO EXPRESS OR IMPLIED WARRANTY OF ANY KIND, INCLUDING WITHOUT LIMITATION WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PRODUCT OR THE INFORMATION. The information may not be valid for product use in combination with any other product or material or in any process. KJLC expressly disclaims any liability arising from any use of the product or any reliance on the information. Do not treat the information (a) as assurance that use of the product will not infringe patent or other rights or (b) as a license or grant of patent or other property rights. “KJLC” means KJLC and each of its subsidiaries. Comment: Control of Substances Hazardous to Health Regulations EH40 Occupational Exposure Limits Maximum Exposure Limit: NE Occupational Exposure Standard: NE . Abbreviations used NA=Not Applicable NE: Not Established ADDENDUM : Other Client Information Notes: , EJTBSNOSPL02, EJTBSNOSPL01, EJTKTNO303A2, EJTNBOX351A2, EJTNBOX351A4, EJTNBOX352A2, EJTNBOX352A4, EJTNBOX353A2, EJTNBOX353A4, EJTNBOX354A2, EJTNBOX354A4, EJTNBOX358A4, EJTTIONBO3A4, EJVPNOX302A4, EVMNBO1−3KG, EVMNBO−3−12, EVMNBO3−12B, EVMNBO3−12D, EVMNBO3−12KG, EVMNBO3−12T, EVMNBO3−12X

KJLC Code: EJTKTNO303A2 Kurt J. Lesker Company

Tantalum oxide, powder and pieces

Manufacturer MSDS Number: Ta2O5

SECTION 1 : Chemical Product and Company Identification

Notes: 5 MSDS Name: Tantalum oxide, powder and pieces Manufacturer Name:Kurt J. Lesker Company Address: P.O. Box 10 1925 Route 51 Clairton, PA 15025

For emergencies in the US, call CHEMTREC: 800−424−9300 Other Phone: US National Poison Hotline: (800)222−1222 Manufacturer MSDS Creation Date: 06/22/2006 Manufacturer MSDS Revision Date: 06/30/2008 Synonyms: Tanatalum oxide, tantalic acid anhydride, tantalum pentoxide, tantalum (V) oxide Chemical Family: Metal oxide Chemical Formula: Ta2O5 Molecular Weight: 441.90 DOT HAZARD LABEL No data. Product Codes: Ta2O5

SECTION 2 : Hazardous Ingredients/Identity Information Chemical Name CAS# % Weight Tantalum oxide 1314−61−0 0.0 −100.0 %

Chemical Name CAS# % Weight See SECTION IX−ADDITIONAL NA 0.0 −100.0 % COMMENTS FOR COSHH Regulations

Notes: 6 Density: No data. Evaporation Point: No data. (VS BUTYL ACETATE=1) Percent Volatile: N.A. FlashPoint: N.A. Upper Flammable Explosive Limit: NA Lower Flammable Explosive Limit: NA

SECTION 5 : Health Hazards

Applies to All Ingredients: Route of Exposure: Inhalation? Yes , Skin? Yes , Eyes? Yes , Ingestion? Yes , Other: N Potential Health Effects: Eye Contact: May cause abrassive irritation. Skin Contact: May cause abbrasive irritation. Inhalation: May cause irritation to the nose and throat. Ingestion: May be toxic by ingestion. Chronic Eye Contact:a No chronic health effects recorded. Chronic Skin Contact: No chronic health effects recorded. Chronic Inhalation: No chronic health effects recorded. Chronic Ingestion: No chronic health effects recorded.

Notes: 7 Carcinogenicity: NTP? No , IARC Monographs? No , OSHA Regulated? No Target Organs: No target organs effected. Signs/Symptoms: INHALATION: May cause a red, dry throat and coughing. INGESTION: May cause nausea and vomiting. SKIN: May cause redness and itching. EYE: May cause redness, itching and watering. Aggravation of Pre−Existing Conditions: Pre−existing respiratory and skin disorders. See "Section II" LD 50/LC 50: orl−rat LD50: 8000 mg/kg

SECTION 6 : Emergency And First Aid Procedures Physical Health Hazard: HEALTH HAZARDS (ACUTE AND CHRONIC): To the best of our knowledge the chemical, physical and toxicological properties of tantalum oxide have not been thoroughly investigated and recorded. Some industrial skin injuries from tantalum have been reported. Systemic industrial poisoning however, is apparently unknown. Questionable carcinogen with experimental tumorigenic data. (Sax, Dangerous Properties of Industrial Materials, eighth edition) Eye Contact: Immediately flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention if symptoms persist. Skin Contact: Remove contaminated clothing; brush material off skin; wash affected area with mild soap and water; seek medical attention if symptoms persist. Inhalation: Remove victim to fresh air; keep warm and quiet; give oxygen if breathing is difficult and seek medical attention if symptoms persist. Ingestion: Give 1−2 glasses of milk or water and induce vomiting; seek medical attention if symptoms persist. Never give anything by mouth to an unconscious person.

SECTION 7 : Reactivity Data Chemical Stability: Unstable [ ] Stable [ X ] Conditions to Avoid: CONDITIONS TO AVOID − INSTABILITY: None; CONDITIONS TO AVOID − HAZARDOUS POLYMERIZATION: None Incompatibilities with Other Materials: Strong oxidizing agents, ClF3, BrF3, lithium and acids. Hazardous Polymerization: Will occur [ ] Will not occur [ X ] Hazardous Decomposition Products: Metal oxide fumes

SECTION 8 : Precautions For Safe Handling Spill Cleanup Measures: Wear appropriate respiratory and protective equipment specified in section VIII−control measures. Isolate spill area and provide ventilation. Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust. Other Precautions: None HAZARD LABEL INFORMATION: Store in cool, dry area Store in tightly sealed container Wash thoroughly after handling

Handling: None Storage:

Notes: 8 None Hygiene Practices: WORK/HYGIENIC/MAINTENANCE PRACTICES: Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating and smoking. Do not blow dust off clothing or skin with compressed air.

Waste Disposal: Dispose of in accordance with local, state and federal regulations.

SECTION 9 : Control Measures Ventilation System: Local exhaust ventilation may be necessary to control any air contaminants to within their PELs or TLVs during the use of this product. Hand Protection Description: Rubber gloves Eye/Face Protection: Safety glasses Protective Clothing/Body Protection: Protective gear suitable to prevent contamination Respiratory Protection: NIOSH approved respirator

NIOSH approved respirator Impervious gloves Safety glasses Ingredient Guidelines Ingredient: See SECTION IX−ADDITIONAL COMMENTS FOR COSHH Regulations Guideline Information: ACGIH TLV: No data.; OSHA PEL: No data.; OTHER LIMITS: No data. Ingredient: Tantalum oxide Guideline Information: ACGIH TLV: 5 mg(Ta)/m3; OSHA PEL: 5 mg(Ta)/m3; OTHER LIMITS: NE

SECTION 10 : Other Information Tantalum oxide: Section 302: No Section 304: No Section 313 Toxic Release Form: No

HMIS: Health Hazard: 0 Fire Hazard: 0 Reactivity: 0 Personal Protection: B MSDS Revision Date: 06/30/2008 Disclaimer: Kurt J. Lesker Company (“KJLC”) believes the information contained in this Material Safety Data Sheet is accurate as of the “Date of Last Revision” specified. The information relates only to typical properties of the product. Do not use the information for product performance or specification purposes. The information is for use by technically skilled persons at their own risk. KJLC MAKES NO EXPRESS OR IMPLIED WARRANTY OF ANY KIND, INCLUDING WITHOUT LIMITATION WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE

Notes: 9 PRODUCT OR THE INFORMATION. The information may not be valid for product use in combination with any other product or material or in any process. KJLC expressly disclaims any liability arising from any use of the product or any reliance on the information. Do not treat the information (a) as assurance that use of the product will not infringe patent or other rights or (b) as a license or grant of patent or other property rights. “KJLC” means KJLC and each of its subsidiaries. Comment: SUPERCEDES REVISION 06/03/2002 Control of Substances Hazardous to Health Regulations EH40 Occupational Exposure Limits Maximum Exposure Limit: NE Occupational Exposure Standard: NE OTHER HAZARD RATINGS: Health: 0 Flammability: 0 Reactivity: 0 Special Hazard: B Minimal:0 Slight: 1 Moderate:2 Serious: 3 Extreme: 4 Abbreviations used NA=Not Applicable NE: Not Established ADDENDUM : Other Client Information Notes: , EJTKTNO303A2, EJTTAOX213MM, EJTTAOX302A2, EJTTAOX302A4, EJTTAOX401A2, EJTTAOX401A4, EJTTAOX402A2, EJTTAOX403A2, EJTTAOX403A4, EJTTAOX404A2, EJTTAOX452A2, EJTTAOX471A4, EVMTAO−1−5, EVMTAO−325MD, EVMTAO4.5MM, EVMTAO4.5MMB, EVMTAO4.5MMD, EVMTAO4.5MMT, EVMTAO4.5MMX, EVMTAO−6MM, EVMTAO−9MM, EVMTAOX1−6MM

KJLC Code: EJTKTNO303A2 Kurt J. Lesker Company

Potassium metal, pieces

Manufacturer MSDS Number: K

SECTION 1 : Chemical Product and Company Identification

MSDS Name: Potassium metal, pieces Manufacturer Name:Kurt J. Lesker Company Address: P.O. Box 10 1925 Route 51 Clairton, PA 15025

For emergencies in the US, call CHEMTREC: 800−424−9300 Other Phone: US National Poison Hotline: (800)222−1222 Manufacturer MSDS Creation Date: 06/30/2006 Manufacturer MSDS Revision Date: 06/25/2008 Synonyms: Potassium metal; kalium . Chemical Family: Metal Chemical Formula: K Molecular Weight: 39.09 DOT HAZARD LABEL No data.

Notes: 10 Product Codes: K

SECTION 2 : Hazardous Ingredients/Identity Information Chemical Name CAS# % Weight Potassium Metal 7440−09−7 0.0 −100.0 %

SECTION 3 : Physical And Chemical Characteristics Physical State/Appearance: Silver metallic pieces, no odor. . Physical State: [ ] Gas , [ ] Liquid , [ X ] Solid pH: No data. Vapor Pressure: 0.0899 at 245.0 C (473.0 F) (VS. AIR OR MM HG) Vapor Density: NA (VS. AIR = 1) Boiling Point: 774.00 deg C (1425.2 deg F) to 760.00 deg C (1400.0 deg F) Melting Point: 63.30 deg C (145.9 deg F) to 63.70 deg C (146.7 deg F) Solubility: OTHER SOLUBILITY NOTES: to KOH Solubility In Water: decomposes Specific Gravity: 0.86 g/cc at 20.0 C (68.0 F) (WATER = 1) Density: No data. Evaporation Point: NA (VS BUTYL ACETATE=1) Percent Volatile: N.A. FlashPoint: N.A. Upper Flammable Explosive Limit: NA Lower Flammable Explosive Limit: NA

SECTION 4 : Fire And Explosion Hazards Flash Point: N.A. Flash Point Method: PYROPHORIC Upper Flammable or Explosive Limit: NA Lower Flammable or Explosive Limit: NA

Notes: 11 Extinguishing Media: Soda ash, graphite or special mixtures of dry chemical Unsuitable Media: Water . Fire Fighting Instructions: Firefighters must wear full face, self−contained breathing apparatus with full protective clothing to prevent contact with skin and eyes. Fumes from fire are hazardous. Isolate runoff to prevent environmental pollution. . Unusual Fire Hazards: DANGEROUS WHEN WET Reacts with moisture to form potassium hydroxide and hydrogen. May ignite in moist air. Forms the peroxide and superoxide (may explode on contact with organic materials) at room temperature even when stored under mineral oil. When heated to decomposition, potassium metal may emit toxic fumes of K2O. May have a violent explosion with acetylene, air, moist air, alcohols, AlBr3, ammonium nitrate + ammonium sulfate, ammonium chlorocuprate, NH4Br, NH4I, antimony halides, arsenic halides, AsH3 + NH3, Bi2O3, boric acid, BBr3, carbon disulfide, solid carbon dioxide, carbon monoxide, chlorinated hydrocarbons, halocarbons, iodine, interhalogens, ClO, CrO3, Cu2OCl2, CuO, ethylene oxide, fluorine graphite, graphite + air, graphite + K2O2, hydrogen iodide, H2O2, hydrogen chloride, hydrazine, Pb2OCl2, PbO2, PbSO4, maleic anhydride, metal halides, metal oxides, nitric acid, nitrogen−containing explosives, non−metal halides, non−metal oxides, oxalyl dibromide, oxalyl dichloride, P2NF, peroxides, COCl2, PH3+NH3, phosphorus, PCl5, PBr3, potassium chlorocuprate, potassium oxides, selenium, SeOCl2, SiCl4, AgIO3, NaIO3, NH3 + NaNO2, Na2O2, SnI4 + S, SnO2, S, sulfuric acid, tellurium, thiophosphoryl fluoride, VOCl2, water. May have a hazardous reaction with carbon, dimethyl sulfoxide, ethylene oxide, chlorine, bromine vapor, hydrogen bromide, potassium iodide + magnesium bromide, chloride or iodide, maleic anhydride, mercury, copper (II) oxide, mercury (II) oxide, tin (IV) oxide, molybdenum (III) oxide, bismuth trioxide, phosphorus trichloride, sulfur dioxide, chromium trioxide.

SECTION 5 : Health Hazards

Potassium Metal: Route of Exposure: Inhalation? Yes , Skin? No , Eyes? No , Ingestion? No , Other: N Potential Health Effects: Eye Contact: May cause irritation. Skin Contact: May be a skin irritant in the presence of moisture. Inhalation: May be a nuisance dust. May cause irritation to the mucous membranes and respiratory tract. Ingestion: No acute health effects recorded. Chronic Eye Contact:a No chronic health effects recorded. Chronic Skin Contact: No chronic health effects recorded. Chronic Inhalation: May cause slight lesions in the lungs. Chronic Ingestion: No chronic health effects recorded. Carcinogenicity: NTP? No , IARC Monographs? No , OSHA Regulated? No Target Organs: May affect the lungs. . Signs/Symptoms: INHALATION: May cause a red, dry throat, coughing and shortness of breath. INGESTION: No acute or chronic health effects recorded. SKIN: May cause redness and itching. EYE: May cause redness, itching and watering. . Other Potential Health Effects: CARCINOGENICITY/OTHER INFORMATION: No data available. Aggravation of Pre−Existing Conditions:

Notes: 12 Pre−existing respiratory disorders. See "Section II" LD 50/LC 50: No toxicity data recorded.

SECTION 6 : Emergency And First Aid Procedures Physical Health Hazard: HEALTH HAZARDS (ACUTE AND CHRONIC): To the best of our knowledge the chemical, physical and toxicological properties of potassium metal have not been thoroughly investigated and recorded. Potassium compounds are not toxic. Any toxicity of the salts is due to the anion. (Sax, Dangerous Properties of Industrial Materials, eighth edition) Eye Contact: Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention if symptoms persist. . Skin Contact: Remove contaminated clothing; brush material off skin; wash affected area with mild soap and water; seek medical attention if symptoms persist. Inhalation: Remove victim to fresh air; keep warm and quiet; give oxygen if breathing is difficult and seek medical attention if symptoms persist. Ingestion: Give 1−2 glasses of milk or water and induce vomiting; seek medical attention if symptoms persist. Never induce vomiting or give anything by mouth to an unconscious person. Note to Physicians: No data available.

SECTION 7 : Reactivity Data Chemical Stability: Unstable [ X ] Stable [ ] Conditions to Avoid: CONDITIONS TO AVOID − INSTABILITY: Moisture and air sensitive .; CONDITIONS TO AVOID − HAZARDOUS POLYMERIZATION: None . Incompatibilities with Other Materials: Water, air, oxidizers, halogens, sulfur, phosphorus, carbon alcohols, halogenated hydrocarbons, carbonyl compounds and carbon dioxide. . Hazardous Polymerization: Will occur [ ] Will not occur [ X ] Hazardous Decomposition Products: Potassium hydroxide, hydrogen, potassium peroxide and potassium superoxide. .

SECTION 8 : Precautions For Safe Handling Spill Cleanup Measures: Wear appropriate respiratory and protective equipment specified in section VIII−control measures. Isolate spill area, extinguish sources of ignition and provide ventilation. Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust. . . Other Precautions: None . HAZARD LABEL INFORMATION: Store in cool, dry area Store in tightly sealed container Wash thoroughly after handling

Handling: Potassium metal is very moisture, air and water reactive. Handle in a controlled, enclosed process in an inert gas such as argon. Store under mineral oil. . Storage: No data available. Hygiene Practices: WORK/HYGIENIC/MAINTENANCE PRACTICES: Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating and smoking. Do not blow dust off clothing or skin with compressed air. .

Notes: 13 Waste Disposal: Dispose of in accordance with local, state and federal regulations. .

SECTION 9 : Control Measures Ventilation System: LOCAL EXHAUST: To maintain concentration at low exposure levels SPECIAL: Handle in an enclosed, controlled process. MECHANICAL (GENERAL): Not recommended OTHER: Handle in an inert gas such as argon. Hand Protection Description: Rubber gloves Eye/Face Protection: Safety glasses Protective Clothing/Body Protection: None necessary Respiratory Protection: NIOSH − approved dust respirator

NIOSH approved respirator Impervious gloves Safety glasses Ingredient Guidelines Ingredient: Potassium Metal Guideline Information: ACGIH TLV: NE; OSHA PEL: NE; OTHER LIMITS: NE

SECTION 10 : Other Information Potassium Metal: Section 302: No Section 304: No Section 313 Toxic Release Form: No

MSDS Revision Date: 06/25/2008 Disclaimer: Kurt J. Lesker Company (“KJLC”) believes the information contained in this Material Safety Data Sheet is accurate as of the “Date of Last Revision” specified. The information relates only to typical properties of the product. Do not use the information for product performance or specification purposes. The information is for use by technically skilled persons at their own risk. KJLC MAKES NO EXPRESS OR IMPLIED WARRANTY OF ANY KIND, INCLUDING WITHOUT LIMITATION WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE PRODUCT OR THE INFORMATION. The information may not be valid for product use in combination with any other product or material or in any process. KJLC expressly disclaims any liability arising from any use of the product or any reliance on the information. Do not treat the information (a) as assurance that use of the product will not infringe patent or other rights or (b) as a license or grant of patent or other property rights. “KJLC” means KJLC and each of its subsidiaries. Abbreviations used NA=Not Applicable NE: Not Established ADDENDUM : Other Client Information Notes: , EJTKTNO303A2

Notes: 14