ICSC 0776 - STIBINE

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STIBINE	ICSC: 0776 (November 2008)
Antimony hydride Antimony trihydride Hydrogen antimonide

CAS #: 7803-52-3

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	PREVENTION	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 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

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. 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

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. 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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