International Chemical Safety Cards COBALT CARBONYL ICSC: 0976 Dicobalt octacarbonyl Cobalt tetracarbonyl Octacarbonyldicobalt C8O8Co2 / (OC)3Co(CO)2Co(CO)3 Molecular mass: 341.9 ICSC #    0976 CAS #     10210-68-1 RTECS # GG0300000 UN #        3281 April 21, 2004 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. NO contact with oxidants. Powder, water spray, foam, carbon dioxide. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE!  •INHALATION Cough. Sore throat. Shortness of breath. Laboured breathing. Symptoms may be delayed (see Notes). Local exhaust or breathing protection. Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.  •SKIN Redness. Pain. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Pain. Redness. Safety goggles, or eye protection in combination with breathing protection if powder. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Abdominal pain. Burning sensation in the throat and chest. Nausea. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Then remove to safe place. Personal protection: self-contained breathing apparatus. Separated from strong oxidants. Well closed. Keep in a well-ventilated room. Airtight. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. R: S: UN Hazard Class: 6.1 UN Packing Group: II SEE IMPORTANT INFORMATION ON BACK ICSC: 0976 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 COBALT CARBONYL ICSC: 0976 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ORANGE CRYSTALS. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on warming or under the influence of air producing toxic fumes of carbon monoxide and cobalt (see ICSC 0023, ICSC 0785). Reacts with oxidants causing fire hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV: (as Co) 0.1 mg/m³ as TWA; (ACGIH 2004). MAK not established. OSHA PEL: none NIOSH REL: TWA 0.1 mg/m3 NIOSH IDLH: No data ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and by ingestion. INHALATION RISK: A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes and the skin . The substance is severely irritating to the respiratory tract . Inhalation of may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Decomposes below boiling point at 52°C Melting point: 51°C Density: 1.7 g/cm3 Solubility in water: none Vapour pressure, Pa at 20°C: about 200 ENVIRONMENTAL DATA N O T E S Do NOT take working clothes home. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Environmental effects from the substance have not been investigated. Transport Emergency Card: TEC (R)-61GT3-II-S ADDITIONAL INFORMATION ICSC: 0976 COBALT CARBONYL (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.