Sulfurous acid
CAS Registry Number®
7782-99-2
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CAS Name
Sulfurous acidMolecular Formula
H2O3SMolecular Mass
82.08Cite this Page
Sulfurous acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. http://commonchemistry.cas.org/detail?cas_rn=7782-99-2 (retrieved ) (CAS RN: 7782-99-2). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).Compound Properties
Density (1)
1.020 g/cm³ @ Temp: 25 °C
Source(s)
Other Names and Identifiers
InChI
InChI=1S/H2O3S/c1-4(2)3/h(H2,1,2,3)
InChIKey
InChIKey=LSNNMFCWUKXFEE-UHFFFAOYSA-N
SMILES
S(=O)(O)O
Canonical SMILES
O=S(O)O
Other Names for this Substance
- Sulfurous acid
- Sulfur dioxide solution
- Sulfurous acid (H2SO3)
Deleted or Replaced CAS Registry Numbers
21093-41-4, 63921-72-2, 65003-85-2, 66085-60-7, 68720-49-0, 70074-94-1, 75481-08-2, 80879-60-3, 104927-19-7, 110883-84-6, 111910-53-3, 125289-32-9, 152463-65-5, 1087413-38-4, 2650417-68-6
