International Chemical Safety Cards GERMANE ICSC: 1244 Germanium hydride Germanium tetrahydride GeH4 Molecular mass: 76.6 ICSC #    1244 CAS #     7782-65-2 RTECS # LY4900000 UN #        2192 March 15, 1995 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, alcohol resistant foam. EXPLOSION Gas/air mixtures are explosive. 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 STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Abdominal cramps. Burning sensation. Cough. Closed system and ventilation. Fresh air, rest. Refer for medical attention.  •SKIN Redness. Pain. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •EYES Redness. Pain. Face shield or 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 (Further see Inhalation). Do not eat, drink, or smoke during work. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Evacuate danger area! Consult an expert! Ventilation. (Extra personal protection: complete protective clothing including self-contained breathing apparatus). Fireproof. R: S: UN Hazard Class: 2.3 UN Subsidiary Risks: 2.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 1244 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 GERMANE ICSC: 1244 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS COMPRESSED GAS , WITH PUNGENT ODOUR. PHYSICAL DANGERS: The gas is heavier than air and may travel along the ground; distant ignition possible. CHEMICAL DANGERS: The substance may spontaneously ignite on contact with air. The substance decomposes on heating above 350°C and on contact with oxidants, such as nitric acid. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.2 ppm; 0.63 mg/m3 (as TWA) (ACGIH 1993-1994). OSHA PEL: none NIOSH REL: TWA 0.2 ppm (0.6 mg/m3) NIOSH IDLH: No data 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 eyes, the skin and the respiratory tract. The substance may cause effects on the blood , resulting in lesions of blood cells. Exposure may result in death. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: -88.5°C Melting point: -165°C Relative density (water = 1): 1.53 Solubility in water, g/100 ml: none Relative vapour density (air = 1): 2.65 Flash point: Flammable Gas ENVIRONMENTAL DATA N O T E S Depending on the degree of exposure, periodic medical examination is indicated. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. NFPA Code: H4; F4; R3 ADDITIONAL INFORMATION ICSC: 1244 GERMANE (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.