International Chemical Safety Cards CALCIUM CYANAMIDE ICSC: 1639 Calcium carbimide Cyanamide, calcium salt CN2•Ca Molecular mass: 80.1 ICSC #    1639 CAS #     156-62-7 RTECS # GS6000000 UN #        1403 EC #         615-017-00-4 October 12, 2006 Validated TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible (impurities constitute a fire risk). Gives off irritating or toxic fumes (or gases) in a fire. NO contact with water. Dry powder. NO carbon dioxide, foam or water. EXPLOSION Risk of fire and explosion on contact with water or metals. EXPOSURE STRICT HYGIENE!  •INHALATION Cough. Burning sensation. Sore throat. See Notes. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Redness. Pain. Safety goggles or eye protection in combination with breathing protection if powder. First rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.  •INGESTION Sore throat. Burning sensation in the throat and chest. Abdominal pain. See NOTES. Do not eat, drink, or smoke during work. Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: P2 filter respirator for harmful particles. Cover the spilled material with non-combustible inert dry absorbent. Sweep spilled substance into covered, plastic containers. Do NOT wash away into sewer. Keep in a well-ventilated room. Dry. Well closed. Separated from food and feedstuffs . Xn symbol R: 22-37-41 S: 2-22-26-36/37/39 UN Hazard Class: 4.3 UN Packing Group: III Signal: Warning Excl mark Harmful if swallowed Causes serious eye irritation SEE IMPORTANT INFORMATION ON BACK ICSC: 1639 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards CALCIUM CYANAMIDE ICSC: 1639 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS CRYSTALS PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes under the influence of water producing cyanamide (see ICSC0424), ammonia , calcium hydroxide and acetylene , causing fire and explosion hazard. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001). OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.5 mg/m³ ROUTES OF EXPOSURE: The substance can be absorbed into the body in hazardous amounts by inhalation and by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed . EFFECTS OF SHORT-TERM EXPOSURE: The substance is severely irritating to the eyes and the respiratory tract . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Decomposes when heated Density: 2.3 g/cm³ Solubility in water: reaction ENVIRONMENTAL DATA This substance may be hazardous in the environment; special attention should be given to aquatic organisms. N O T E S In combination with even small amounts of alcohol the substance causes effects on cardiovascular and central nervous systems resulting in flushing, palpitation, hypotension and hyperventilation. The effects may be delayed. Commercial calcium cyanamide is a crystalline substance which contains trace amounts of calcium carbide which may produce acetylene in production vessels or containers. Reacts violently with fire extinguishing agents such as water. UN 1403: Calcium Cyanamide with more than 0.1% calcium carbide. Transport Emergency Card: TEC (R)-43GW2-II+III. NFPA Code: H-; F3; R1; W Card has been partially updated in January 2008: see Occupational Exposure Limits. ADDITIONAL INFORMATION ICSC: 1639 CALCIUM CYANAMIDE (C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.