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STIBINEICSC: 0776
November 2008
CAS #: 7803-52-3Antimony hydride
Antimony trihydride
Hydrogen antimonide
UN #: 2676

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Gas/air mixtures are explosive. Risk of fire and explosion on contact with ozone or nitric acid.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting.  Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with water spray.  In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. 

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Sore throat. Headache. Weakness. Laboured breathing. Nausea. Weak and irregular pulse. Hemoglobinuria.  Use closed system or ventilation.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention. 
Skin ON CONTACT WITH LIQUID: FROSTBITE.  Cold-insulating gloves.  ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer immediately for medical attention. 
Eyes Redness.  Wear eye protection in combination with breathing protection.  Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion      

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus. Ventilation. 

According to UN GHS Criteria

flam;flameskull;toxiccancer;health haz
DANGER
Extremely flammable gas
Fatal if inhaled
May cause damage to respiratory tract and blood if inhaled 

Transportation
UN Classification
UN Hazard Class: 2.3; UN Subsidiary Risks: 2.1 

STORAGE
Fireproof. Cool. 
PACKAGING
 
STIBINE ICSC: 0776
PHYSICAL & CHEMICAL INFORMATION

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
Decomposes slowly at room temperature. Decomposes quickly at 200°C. This produces metallic antimony and hydrogen. This increases fire hazard. Reacts violently with chlorine, concentrated nitric acid and ozone. This generates fire and explosion hazard. 

Formula: SbH3
Molecular mass: 124.8
Boiling point: -18°C
Melting point: -88°C
Relative density (water = 1): 2.26 (-25°C)
Solubility in water: poor
Relative vapour density (air = 1): 4.4
Flash point: Flammable gas 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation. 

Effects of short-term exposure
Rapid evaporation of the liquid may cause frostbite. The substance is severely irritating to the respiratory tract. The substance may cause effects on the blood blood. This may result in destruction of blood cells. Exposure above the OEL could cause death. Medical observation is indicated. 

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
TLV: 0.1 ppm as TWA 

ENVIRONMENT
 

NOTES
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 suggested.
The relation between odour and the occupational exposure limit cannot be indicated. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn, N; R: 20/22-51/53; S: (2)-61; Note: A, 1 

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    See Also:
       Toxicological Abbreviations