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AMMMONIUM BISULFITE ICSC: 1254
Date of peer-review: March 1995

Sulfurous acid, monoammonium salt
Ammonium hydrogen sulfite
CAS # 10192-30-0 H5NO3S/NH4HSO3
RTECS # WT3595000 Molecular mass: 99.1
UN # 2693 (bisulfites, aqueous solution)
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION


EXPOSURE


Inhalation
Ventilation (not if powder), local exhaust, or breathing protection.

Skin
Protective gloves.

Eyes
Safety spectacles.

Ingestion
Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water (extra personal protection: P2 filter respirator for harmful particles).
Do not transport with food and feedstuffs.
EU Classification
UN Classification
UN Hazard Class: 8
UN Pack Group: III
EMERGENCY RESPONSE STORAGE

Separated from strong oxidants, acids, food and feedstuffs. Well closed.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities © IPCS, CEC 2001

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AMMMONIUM BISULFITE ICSC: 1254
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO YELLOW CRYSTALS.

CHEMICAL DANGERS:
The substance decomposes on heating or on contact with acids producing toxic fumes including sulfur oxides, nitrogen oxides and ammonia. Reacts violently with oxidants. Attacks many metals in presence of water at high concentration.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered.

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

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


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
© IPCS, CEC 2001


    See Also:
       Toxicological Abbreviations