Potassium sulfite

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Potassium sulfite
Potassium sulfite.png
Identifiers
CAS number 10117-38-1 YesY
PubChem 24958
ChemSpider 23332 N
Jmol-3D images Image 1
Properties
Molecular formula K2SO3
Molar mass 158.26 g/mol
Appearance white solid
Solubility in water soluble
Acidity (pKa) 8
Hazards
EU Index Not listed
Flash point Non-flammable
Related compounds
Other anions Potassium sulfate
Potassium selenite
Other cations Sodium sulfite
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

Potassium sulfite (K2SO3) 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 (INS number 225). It is approved for use in Australia and New Zealand[1] and is not approved in the EU.[2]

References[edit]

  1. ^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". Retrieved 2011-10-27. 
  2. ^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27.