What is E353?

Metatartaric acid is a food additive. Chemically, it is a polymeric lactone of variable composition and different molecular weights obtained through a dehydration reaction by heating tartaric acid. E353 sits in the E300–E399 series, which in the EU classification mainly covers antioxidants and acidity regulators.

What is E353 used for?

E353 belongs to the antioxidants group. Antioxidants stop fats going rancid and food discolouring. Several are natural, such as ascorbic acid (vitamin C).

Is E353 safe?

E353 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 E353 appears on labels

On food packaging you'll find E353 either as the number “E353” or by the name “Metatartaric 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 E353 vegan?

Yes, E353 is suitable for vegans.