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SILANE
(cylinder)
ICSC: 0564
Peer-Review Status: 04.07.1997 Validated
Monosilane
Silicon tetrahydride
Silicane 
CAS #: 7803-62-5 RTECS #: VV1400000
UN #: 2203
    Formula: SiH4
Molecular mass: 32.1

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 powder, carbon dioxide. 
EXPLOSION Gas/air mixtures are explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting.  Combat fire from a sheltered position. 
 
EXPOSURE   STRICT HYGIENE!   
Inhalation Cough. Headache. Nausea. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. ON CONTACT WITH LIQUID: FROSTBITE.  Cold-insulating gloves.  ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion      

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: self-contained breathing apparatus. Ventilation. Remove gas with fine water spray.   
EC Classification
 
UN Classification
UN Hazard Class: 2.1 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H2; F4; R3.  Fireproof. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS GAS WITH CHARACTERISTIC ODOUR. 

Physical dangers
The gas is heavier than air. 

Chemical dangers
The substance may ignite spontaneously on contact with air. Decomposes on heating and on burning. This produces silicon and hydrogen. This generates fire and explosion hazard. The substance is a strong reducing agent. It reacts violently with oxidants. Reacts with potassium hydroxide solution and halogens. 

Occupational exposure limits
TLV: 5ppm, 6.6mg/m³ as TWA; (ACGIH 1996). 

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 is irritating to the eyes, skin and respiratory tract. Rapid evaporation of the liquid may cause frostbite. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: -112°C
Melting point: -185°C
Solubility in water: slow reaction
Relative vapour density (air = 1): 1.3
Explosive limits, vol% in air: 1.37-100 
 

NOTES
 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations