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SODIUM BISULFITE 38-40 % AQUEOUS SOLUTION
ICSC: 1134
Peer-Review Status: 04.06.2006 Validated
Sodium hydrogensulfite solution
Sodium metabisulfite solution 
CAS #: 7631-90-5 RTECS #: VZ2000000
UN #: 2693
EC #: 016-064-00-8
EINECS #: 231-548-0
    Formula: NaHO3S

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE      
Inhalation   Use ventilation.  Fresh air, rest. 
Skin   Protective gloves.  Rinse skin with plenty of water or shower. 
Eyes   Wear safety spectacles.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). 
Ingestion Abdominal pain. Vomiting.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Collect leaking and spilled liquid in covered plastic containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: Xn; R: 22-31; S: (2)-25-46; Note: B 
UN Classification
UN Hazard Class: 8; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-80GC1-II+III.  Separated from acids, strong oxidants and food and feedstuffs. Well closed. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on contact with acids. This produces sulfur oxides. Reacts with acids and strong oxidants. This generates fire and explosion hazard. The substance is a weak acid. Attacks metals. 

Occupational exposure limits
TLV: 5mg/m³ as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005). 

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

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached d. 

Effects of short-term exposure
Ingestion could cause asthma-like reactions or urticaria in sensitive persons. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 104°C
Melting point: <0°C
Relative density (water = 1): 1.34
Solubility in water: miscible 
This substance may be hazardous to the environment. Special attention should be given to water quality. 

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