What is E220?

Sulfur dioxide or sulphur dioxide is the chemical compound with the formula SO2. It is a colorless gas with a pungent smell that is responsible for the odor of burnt matches. E220 sits in the E200–E299 series, which in the EU classification mainly covers preservatives.

What is E220 used for?

E220 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 E220 safe?

E220 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 E220 appears on labels

On food packaging you'll find E220 either as the number “E220” or by the name “Sulphur dioxide” 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 E220 vegan?

Yes, E220 is suitable for vegans.