YenzoWhat is E225 (potassium sulphite)?
It is potassium sulphite, a sulphite of the sulphur dioxide group. Circular 24/2019/TT-BYT lists E225 as preservative and antioxidant.
E225Potassium sulphite
E225 is potassium sulphite, a salt of sulphur dioxide. In food it holds back microbes and slows oxidation, so drinks and processed fruit keep their colour and last longer.
- Code
- E225 · INS 225
- Group
- Preservative, Antioxidant
In Vietnam✓ PermittedOn the list of permitted additives — Circular 24/2019, Appendix 1
Risk level on the Yenzo ScalemoderateBased on the Open Food Facts additives taxonomy
How E225 appears on labels
IngredientsIllustrative example
Wheat flour, vegetable oil, salt, sugar, preservative (225), dried onion and garlic, pepper, natural colour (160a).
preservative (225)preservative 225E225INS 225On Vietnamese labels: Kali sulfit
Potassium sulphite in food
Dried fruit, jams
Dried, pickled and frozen vegetables
Pasta, flour, starch
Fish and shellfishSugar, syrups
Seasonings, sauces, vinegarJuices, flavoured drinksWine, beer, cider
Potato and cereal snacksQuestions about potassium sulphite
Is E225 permitted in Vietnam?
Yes. Potassium sulphite (INS 225) is listed in Appendix 1 of Circular 24/2019/TT-BYT, the list of additives permitted in food, as a preservative and antioxidant.
Other preservatives
E222Sodium hydrogen sulphitemoderateE223Sodium metabisulphitemoderateE224Potassium metabisulphitemoderateE226Calcium sulphitehighE227Calcium hydrogen sulphitehighE228Potassium hydrogen sulphitehigh
See all preservatives →Updated 21 October 2026
Sources (2)
- Open Food Facts additives taxonomy (Yenzo's table cites no EFSA opinion for this code). Open Food Facts additives taxonomy, https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/additives.txt (entry en:e225)
- Thông tư 24/2019/TT-BYT (văn bản hợp nhất 09/VBHN-BYT), Phụ lục 2A (nhóm sulfit, INS 220–225)