International Chemical Safety Cards CARBON MONOXIDE ICSC: 0023 Carbon oxide Carbonic oxide CO Molecular mass: 28.0 ICSC #    0023 CAS #     630-08-0 RTECS # FG3500000 UN #        1016 EC #         006-001-00-2 October 25, 1994 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Extremely flammable. NO open flames, NO sparks, and NO smoking. Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out; in other cases extinguish with carbon dioxide, water spray, powder. EXPLOSION Gas/air mixtures are explosive. Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. EXPOSURE AVOID EXPOSURE OF (PREGNANT) WOMEN! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Confusion. Dizziness. Headache. Nausea. Unconsciousness. Weakness. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.  •SKIN  •EYES  •INGESTION SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. Personal protection: self-contained breathing apparatus. Fireproof. Cool. Note: E F+ symbol T symbol R: 61-12-23-48/23 S: 53-45 UN Hazard Class: 2.3 UN Subsidiary Risks: 2.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 0023 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 CARBON MONOXIDE ICSC: 0023 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ODOURLESS, TASTELESS, COLOURLESS COMPRESSED GAS. PHYSICAL DANGERS: The gas mixes well with air, explosive mixtures are easily formed. The gas penetrates easily through walls and ceilings. CHEMICAL DANGERS: In the presence of finely dispersed metal powders the substance forms toxic and flammable carbonyls. May react vigorously with oxygen, acetylene, chlorine, fluorine, nitrous oxide. OCCUPATIONAL EXPOSURE LIMITS: TLV: 25 ppm as TWA; BEI issued; (ACGIH 2004). MAK: 30 ppm, 35 mg/m³; Peak limitation category: II(1); Pregnancy risk group: B; (DFG 2004). OSHA PEL: TWA 50 ppm (55 mg/m3) NIOSH REL: TWA 35 ppm (40 mg/m3) C 200 ppm (229 mg/m3) NIOSH IDLH: 1200 ppm ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: A harmful concentration of this gas in the air will be reached very quickly on loss of containment. EFFECTS OF SHORT-TERM EXPOSURE: The substance may cause effects on the blood cardiovascular system and central nervous system . Exposure at high levels may result in lowering of consciousness and death. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the nervous system and cardiovascular system , resulting in neurological and cardiac disorders. Suspected to cause reproductive effects such as neurological problems, low birth weight, increased still births, and congenital heart problems. PHYSICAL PROPERTIES Boiling point: -191°C Melting point: -205°C Solubility in water, ml/100 ml at 20°C: 2.3 Relative vapour density (air = 1): 0.97 Flash point: Flammable Gas Auto-ignition temperature: 605°C Explosive limits, vol% in air: 12.5-74.2 ENVIRONMENTAL DATA N O T E S Carbon monoxide is a product of incomplete combustion of coal, oil, wood. It is present in vehicle exhaust and tobacco smoke. Depending on the degree of exposure, periodic medical examination is suggested. No odour warning if toxic concentrations are present. Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response. Transport Emergency Card: TEC (R)-20S1016 NFPA Code: H3; F4; R0 ADDITIONAL INFORMATION ICSC: 0023 CARBON MONOXIDE (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.