Material Safety Data Sheet Revision: 10/23/2001

Hazard information is provided for compliance with both the UK Chemicals (Hazard Information and Packaging) (CHIP) Regulations and the US Hazard Communication Standard (HCS)

IDENTIFICATION OF THE PRODUCT NAME: PRODUCT CODE: EEC NUMBER: SUBSTANCE/PREPARATION Potassium Nitrate, ACS Reagent Grade 20271 None AND COMPANY

SUPPLIER: Emergency Contact: USB Corporation, 26111 Miles Road, Cleveland, Ohio 44128 Phone: (216) 765-5000 Chemtrec (800) 424-9300 Outside USA & Canada 703 527 3887 COMPOSITION/ HAZARDOUS COMPONENTS HAZARD CAS NO. %WT TLV CHIP R & S Phrases

Potassium Nitrate 7757-79-1 ~100% R:8 Contact with combustible material may cause fire. R:22 Harmful if swallowed. R:36/37/38 Irritating to eyes, respiratory system and skin. S:7 Keep container tightly closed. S:17 Keep away from combustible material. S:26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S:36 Wear suitable protective clothing.

HAZARDS IDENTIFICATION CHIP Oxidizer HCS Oxidizer

FIRST-AID MEASURES EYES: Flush with water for 15 minutes. Seek medical advice if irritation persists. SKIN: Flush with water, then wash thoroughly with soap and water. Remove contaminated clothing and wash before reuse. Seek medical attention if irritation persists. INHALATION: Remove the victim from exposure and move to fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration. Keep victim quiet and warm. Seek immediate medical attention. INGESTION: Drink water and seek immediate medical attention. Avoid alcoholic beverages. Never give anything by mouth to an unconscious person.

FIRE-FIGHTING INFORMATION Strong Oxidizer. Contact with combustible materials may cause a fire. Use media suitable to extinguish the supporting or surrounding fire. Wear NIOSH (or equivalent) approved self contained breathing apparatus. For small fires only: use carbon dioxide, dry powder or foam. Emits toxic fumes under fire conditions. Contact with other material may cause fire. May accelerate combustion. May explode from heat or contamination. May decompose explosively when heated or involved in a fire. NFPA Ratings: H=1 F=1 R=1. Flash Point = No data available.

ACCIDENTAL RELEASE MEASURES Wear appropriate personal protective equipment and clothing including lab coat, safety glasses, gloves and NIOSH-approved respirator. Collect in a manner that does not create dust and place in a suitable waste container. Avoid contact of material with skin or eyes. Use adequate ventilation.

HANDLING AND STORAGE Wear appropriate personal protective equipment and clothing including lab coat, safety glasses, gloves and NIOSH-approved respirator. Avoid contact of material with skin or eyes. Use adequate ve ntilation. Store ambient away from incompatible material.

This data sheet is based upon information believed to be reliable. The Company makes no statement or warranty as to the accuracy or completeness of the information contained herein which is offered for your consideration, investigation and verification. Any use of the information contained in this data sheet must be determined by the user to be in accordance with appropriate applicable regulations. For Further Asia Pacific Canada Former Soviet Union Japan Norway Spain USA Information, +852 2811 8693 1 800 463 5800 +7 (095) 232 0250 81 3 5331 9337 63 89 23 10 935 944 950 USB Corporation contact your (216) 765-5000 local USB Australia Central and East Europe France Latin America Portugal Sweden If purchased from authorized +61 2 9894 5188 +43 1 982 3826 0169 18 28 00 +55 11 3667 5700 01 417 70 35 018 164000 Amersham Pharmacia distributor, Biotech use Amersham Austria Denmark Germany Middle East and Africa South East Asia Switzerland 1 800 526 3593 Pharmaicia 01 576 0616 10 +45 4516 2400 0 7 61 49 03 0 +30 (1) 96 00 687 60 3 724 2080 01 802 81 50 Biotech Belgium Finland Italy Netherlands South East Europe UK 0800 73888 358 (9) 512 3940 02 27322 1 0165 580 410 +43 (1) 982 3826 0800 515313 MSDS information may be continued on back of page. PERSONAL PROTECTION Wear appropriate personal protective equipment and clothing including lab coat, safety glasses, gloves and NIOSH-approved respirator. A qualified industrial hygienist should evaluate the need for respiratory protection. Use respiratory protection approved by NIOSH (or equivalent) and appropriate to the hazard. Avoid contact of material with skin or eyes. Mechanical ventilation or local exhaust as needed to control exposure to dust, vapors or mists. Access to a safety shower and eye-wash.

PHYSICAL AND CHEMICAL Appearance: White crystals Boiling Point: No data available PROPERTIES Vapor Pressure: No data available Vapor Density: 3.5 Solubility (Water): Soluble Specific Gravity: 2.109 Percent Volatile: No data available Evaporation Rate: No data available : K-N-O3AK Melting Point: 334°C

STABILITY AND REACTIVITY Product is stable. Sensitive to moisture. Hazardous decomposition products include oxides of nitrogen and carbon. Incompatible with dust generation, combustible material, finely powdered metals, strong acids, organic material and strong reducing agents. A mixture with calcium silicide is easily ignite d and burns at very high temperatures which is capable of initiating many high temperature reactions. Mixtures of potassium nitrate with: titanium, antimany, or zirconium powders, , barium , , arsenic disulfide, tatanium disulfide, germanium monosulfide, , powdered carbon, sodium phosphinate, sodium acetate, sodium thiosulfate, thorium dicarbide, aluminum, magnesium, sodium or iron, chromium nitride may explode or be detonable if heated, ignited or struck. Hazardous polymerization will not occur.

TOXICOLOGICAL INFORMATION EFFECTS OF OVEREXPOSURE: EYES: Contact may cause eye irritation. SKIN: Contact may cause skin irritation. INHALATION: May cause irritation to mucous membranes and upper respiratory tract. May cause methmoglobinemia, cyanosis, convulsions, tachycardia, dyspnea and death. INGESTION: May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Harmful if swallowed. ADDITIONAL INFORMATION: May be harmful if inhaled or absorbed through the skin. Prolonged exposure may cause anemia and methemoglobinemia, characterized by dizziness, drowsiness, headache, shortness of breath, cyanosis, rapid heart rate, chocolate-brown colored blood, unconsciousness and possible death. Onset may be delayed 2 to 4 hours or longer. May cause kidney injury. Reproductive effects, mutation and toxicity data listed in RTECS under TT3700000. Oral Rat LD50 = 3750 mg/kg (Japan - 1983). Details of toxic effects not reported other than lethal dose value. Reproductive: Effect on Newborn - stillbirth (1968) and behavioral (1989). Fertility - abortion (1974). Definition(s): RTECS = Registry of Toxic Effects of Chemical Substanc es.

ECOLOGICAL INFORMATION No information available.

DISPOSAL CONSIDERATIONS Dispose of material in accordance with applicable local, state, and federal regulations.

TRANSPORTATION INFORMATION US DOT / IATA: Potassium Nitrate, Class 5.1, UN1486, PG III, Label=Oxidizer.

REGULATORY INFORMATION RCRA - No applicable information. SARA 302 - This material does not have an RQ or TPQ. SARA 313 - This material is not reportable under 313. EPA TSCA Section 8(b) - Chemical Inventory. 8(e) - Risk Notification, 8EHQ-0892-8804. Exposure Limits - No applicable information. California Proposition 65 - No applicable information.