International Chemical Safety Cards STIBINE ICSC: 0776 Antimony hydride Antimony trihydride Hydrogen antimonide SbH3 Molecular mass: 124.8 (cylinder) ICSC #    0776 CAS #     7803-52-3 RTECS # WJ0700000 UN #        2676 EC #         051-003-00-9 October 08, 1997 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Extremely flammable. Cylinder may explode in heat of fire. Gives off irritating or toxic fumes (or gases) in a fire. 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. Risk of fire and explosionon contact with ozone or concentrated nitric acid. Closed system, ventilation, explosion-proof electrical equipment and lighting. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. EXPOSURE AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Cough. Headache. Laboured breathing. Nausea. Sore throat. Weakness. Wheezing. Weak and irregular pulse. Haemoglobinuria. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Refer for medical attention.  •SKIN ON CONTACT WITH LIQUID: FROSTBITE. Cold-insulating gloves. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes.  •EYES Redness. 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 SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. (Extra personal protection: self-contained breathing apparatus). Fireproof. Cool. Note: A Xn symbol R: 20/22 S: 2 UN Hazard Class: 2.3 UN Subsidiary Risks: 2.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 0776 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 STIBINE ICSC: 0776 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS COMPRESSED GAS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The gas is heavier than air and may travel along the ground; distant ignition possible. CHEMICAL DANGERS: The substance decomposes slowly at room temperature but quickly at 200°C producing metallic antimony and hydrogen. Reacts violently with chlorine, concentrated nitric acid and ozone causing fire and explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.1 ppm; 0.51 mg/m3 (as TWA) (ACGIH 1997). MAK: 0.1 ppm; 0.5 mg/m3; (1996) OSHA PEL: TWA 0.1 ppm (0.5 mg/m3) NIOSH REL: TWA 0.1 ppm (0.5 mg/m3) NIOSH IDLH: 5 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 irritates the respiratory tract. The substance may cause effects on the blood (haemolysis), the kidneys, liver, and the central nervous system. Exposure above the OEL may result in death. The effects may be delayed. Medical observation is indicated. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: -18°C Melting point: -88°C Relative density (water = 1): 2.26 at -25°C Solubility in water: poor Relative vapour density (air = 1): 4.4 Flash point: Flammable Gas ENVIRONMENTAL DATA N O T E S Explosive limits are unknown in literature, although the substance is combustible and has a flash point < 61°C. Depending on the degree of exposure, periodic medical examination is indicated. The relation between odour and the occupational exposure limit cannot be indicated. Transport Emergency Card: TEC (R)-20G43 NFPA Code: H4; F4; R2; ADDITIONAL INFORMATION ICSC: 0776 STIBINE (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.