3D model (JSmol)
|E number||E225 (preservatives)|
|Molar mass||158.26 g/mol|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
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 and is not approved in the EU or US.
Potassium sulfite is produced by the thermal decomposition of potassium metabisulfite at 190°C: K2S2O5 → K2SO3 + SO2
- Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". Retrieved 2011-10-27.
- UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27.
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