Sulfurous acid

CAS Registry Number®

7782-99-2

CAS Name

Sulfurous acid

Molecular Formula

H2O3S

Molecular Mass

82.08

Cite 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 2024-11-22) (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

CAS INSIGHTSTM
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