International Chemical Safety Cards NICKEL SULFIDE ICSC: 0928 Heazlewoodite Nickel subsulphide Trinickel disulfide Ni3S2 Molecular mass: 240.19 ICSC #    0928 CAS #     12035-72-2 RTECS # QR9800000 EC #         028-007-00-4 October 10, 1997 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!  •INHALATION Cough. Sore throat. Ventilation, local exhaust, or breathing protection. Fresh air, rest.  •SKIN Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap.  •EYES Safety spectacles, or eye protection in combination with breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Rest. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: complete protective clothing including self-contained breathing apparatus). T symbol R: 49-43 S: 53-45 SEE IMPORTANT INFORMATION ON BACK ICSC: 0928 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 NICKEL SULFIDE ICSC: 0928 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: PALE YELLOWISH BRONZE LUMPS WITH METALLIC LUSTRE. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating to high temperatures producing sulphur oxides. OCCUPATIONAL EXPOSURE LIMITS: TLV (as nickel): 1 mg/m3 (as TWA) A1 (ACGIH 1997). NIOSH REL*: Ca TWA 0.015 mg/m3 See Appendix A *Note: The REL does not apply to Nickel NIOSH IDLH: Potential occupational carcinogen 10 mg/m3 (as Ni) ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol. INHALATION RISK: EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: Repeated or prolonged contact may cause skin sensitization. This substance is carcinogenic to humans. PHYSICAL PROPERTIES Melting point: 790°C Relative density (water = 1): 5.82 Solubility in water: none ENVIRONMENTAL DATA N O T E S Depending on the degree of exposure, periodic medical examination is indicated. Do NOT take working clothes home. ADDITIONAL INFORMATION ICSC: 0928 NICKEL SULFIDE (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.