International Chemical Safety Cards ETHANE ICSC: 0266 C2H6 Molecular mass: 30.1 (cylinder) ICSC #    0266 CAS #     74-84-0 RTECS # KH3800000 UN #        1035 EC #         601-002-00-X March 25, 1996 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 water spray. EXPLOSION Gas/air mixtures are explosive. Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding) if in liquid state. Use non-sparking handtools. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. EXPOSURE  •INHALATION Simple axphyxiant. Ventilation. Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.  •SKIN ON CONTACT WITH LIQUID: FROSTBITE. Cold-insulating gloves. Protective clothing. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.  •EYES ON CONTACT WITH LIQUID: FROSTBITE. Face shield. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. NEVER direct water jet on liquid. (Extra personal protection: chemical suit with self-contained breathing apparatus). Fireproof. Cool. F+ symbol R: 12 S: 2-9-16-33 UN Hazard Class: 2.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 0266 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 ETHANE ICSC: 0266 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS, COMPRESSED LIQUEFIED GAS, ODOURLESS WHEN PURE. PHYSICAL DANGERS: The gas mixes well with air, explosive mixtures are easily formed. As a result of flow, agitation, etc., electrostatic charges can be generated. CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS: TLV: simple axphyxiant (ACGIH 1995-1996). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: On loss of containment this liquid evaporates very quickly causing supersaturation of the air with serious risk of suffocation when in confined areas. EFFECTS OF SHORT-TERM EXPOSURE: Rapid evaporation of the liquid may cause frostbite. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: -89°C Melting point: -183°C Solubility in water, ml/100 ml at 20°C: 4.7 Vapour pressure, kPa at 20°C: 3850 Relative vapour density (air = 1): 1.05 Flash point: flammable gas Auto-ignition temperature: 472°C Explosive limits, vol% in air: 3.0-12.5 Octanol/water partition coefficient as log Pow: 1.81 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. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. Transport Emergency Card: TEC (R)-868 NFPA Code: H1; F4; R0 ADDITIONAL INFORMATION ICSC: 0266 ETHANE (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.