Potassium sulfite

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Potassium sulfite
IUPAC name Dipotassium sulfite
Other names Potassium sulphite
E225
Identifiers
CAS number
PubChem 24958
SMILES [O-]S(=O)[O-].[K+].[K+]
Properties
Molecular formula K2SO3
Molar mass 158.26 g/mol
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Potassium sulfite (potassium sulphite) is a chemical compound which is the salt of potassium cation and sulfite anion. As a food additive it is used as a preservative under the E number E225.