What is E226?

Calcium sulfite, or calcium sulphite, is a chemical compound, the calcium salt of sulfite with the formula CaSO3·x(H2O). Two crystalline forms are known, the hemihydrate and the tetrahydrate, respectively CaSO3·½(H2O) and CaSO3·4(H2O). E226 sits in the E200–E299 series, which in the EU classification mainly covers preservatives.

What is E226 used for?

E226 belongs to the preservatives group. Preservatives stop food from spoiling by slowing bacteria, mould and yeast. Most are safe, though some people limit certain ones.

Is E226 safe?

E226 is rated “moderate”. It is approved for use in food, but some people prefer to limit it. “Moderate” means it is approved, but is debated or something some people prefer to limit.

How E226 appears on labels

On food packaging you'll find E226 either as the number “E226” or by the name “Calcium sulphite” in the ingredient list, often after its function. Ingredients are listed in descending order by weight, so an additive near the end is present only in small amounts.

Is E226 vegan?

Yes, E226 is suitable for vegans.