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Sulfurous Acid

亞硫酸 , 磺酸, Sulphurous acid, sodium sulfite, hydrogen sulphite (bisulphite), SULFUROUS ACID, dihydroxy sulphoxide, Schweflige saure [German], acide sulfureux, Sulfur dioxide solution, acido sulfuroso, MFCD00011335, EINECS 231-973-1, UN1833

CAS Number: 7782-99-2

IUPAC name: sulfurous acid

Molecular formula: H2O3S

Molecular weight: 82.07910

InChI: InChI=1S/H2O3S/c1-4(2)3/h(H2,1,2,3)

InChIKey: LSNNMFCWUKXFEE-UHFFFAOYSA-N

SMILES: -

EINECS: OS(=O)O

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Substance Information
CAS Number: 
7782-99-2
Chemical Name: 
Sulphurous acid
Chinese name: 
亚硫酸
Date of inquiry : 
Apr 5, 2026
Inquiry website: 
https://www.chemradar.com/en/tools/gcis
GCIS inquiry report
Inventory NameCountry/RegionStatusObligations
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