International Chemical Safety Cards NITROGEN (COMPRESSED GAS) ICSC: 1198 N2 Molecular mass: 28.01 ICSC #    1198 CAS #     7727-37-9 RTECS # QW9700000 UN #        1066 March 22, 1999 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. Heating will cause rise in pressure with risk of bursting. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION In case of fire: keep cylinder cool by spraying with water. EXPOSURE  •INHALATION Unconsciousness. Weakness. Suffocation. See Notes. Ventilation. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.  •SKIN  •EYES  •INGESTION SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Ventilation. (Extra personal protection: self-contained breathing apparatus). Fireproof if in building. Cool. Keep in a well-ventilated room. R: S: UN Hazard Class: 2.2 SEE IMPORTANT INFORMATION ON BACK ICSC: 1198 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 NITROGEN (COMPRESSED GAS) ICSC: 1198 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ODOURLESS, COLOURLESS COMPRESSED GAS PHYSICAL DANGERS: Gas mixes readily with air. CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS: TLV not established. Listed by ACGIH as simple asphyxiant. (ACGIH 1998) ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: On loss of containment this gas can cause suffocation by lowering the oxygen content of the air in confined areas. See Notes. EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: -196°C Melting point: -210°C Solubility in water: poor Relative vapour density (air = 1): 0.97 ENVIRONMENTAL DATA N O T E S High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area. Transport Emergency Card: TEC (R)-20G30 ADDITIONAL INFORMATION ICSC: 1198 NITROGEN (COMPRESSED GAS) (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.