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Sulfurous Acid

Sulfurous acid / CAS : 7782-99-2

Appearance Transparent colorless liquid UN 1833 8/PG 2
HS 2806200000 DG Class 8
Synonyms Sulphurous acid; Sulfur Dioxide Solution; Schweflige Saure; Acide Sulfureux; Acido Sulfuroso; Schweflige Saeure; Trioxosulfuric acid; Trioxosulphate(IV); Dihydroxidooxidosulfur; Trioxosulphate(2-); Dihydrogen Trioxosulfate; Sulfite (Sodium Sulfite); Sulfurous Anhydride; Sodium Sulfite; Hydrogen Sulphite (Bisulphite); Dihydroxy Sulphoxide;
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Properties

Summary

Formula
H2O3S
Molecular Mass
82.07910
Exact Mass
81.97250
PSA
76.74000
Logp
0.54680
IUPAC
sulfurous acid
SMILES
OS(=O)O

Attribute classification

Matter Classification
inorganic
Category
Inorganic Chemicals > Inorganic Acid

Chemical and Physical Properties

Density
1.03 g/mL at 25 °C(lit.)
Appearance
Transparent colorless liquid

Export information

HS Code
2806200000
UN No.
1833 8/PG 2
DG-Class
8
Risk Code
R20-34-36/38
Safety Label
C,Xn

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