What is E297?

Fumaric acid or trans-butenedioic acid is an organic compound with the formula HO2CCH=CHCO2H. A white solid, fumaric acid occurs widely in nature. E297 sits in the E200–E299 series, which in the EU classification mainly covers preservatives.

What is E297 used for?

E297 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 E297 safe?

E297 is considered safe at the levels used in food and is approved for use in the EU. “Safe” means it is approved in the EU and regarded as safe at the levels used in food.

How E297 appears on labels

On food packaging you'll find E297 either as the number “E297” or by the name “Fumaric acid” 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 E297 vegan?

Yes, E297 is suitable for vegans.