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AMMMONIUM BISULFITE
ICSC: 1254
Peer-Review Status: 15.03.1995 Validated
Sulfurous acid, monoammonium salt
Ammonium hydrogen sulfite 
CAS #: 10192-30-0 RTECS #: WT3595000
UN #: 2693 (bisulfites, aqueous solution)
EINECS #: 233-469-7
    Formula: H5NO3S/NH4HSO3
Molecular mass: 99.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE      
Inhalation   Use ventilation (not if powder), local exhaust or breathing protection.   
Skin   Protective gloves.   
Eyes   Wear safety spectacles.   
Ingestion   Do not eat, drink, or smoke during work.   

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.  Do not transport with food and feedstuffs. 
EC Classification
 
UN Classification
UN Hazard Class: 8; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  Separated from strong oxidants, acids and food and feedstuffs. Well closed. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS-TO-YELLOW CRYSTALS. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on contact with acids. This produces toxic fumes including sulfur oxides, nitrogen oxides and ammonia. Reacts violently with oxidants. Attacks many metals in the presence of water at high concentration. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. 

Effects of short-term exposure
 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 150°C
Relative density (water = 1): 2.0
Solubility in water, g/100ml at 10°C: 267  
 

NOTES
Mainly sold as aqueous solution.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. 

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