What is E357?

Potassium adipate is a compound with formula K2C6H8O4. It is a potassium salt and common source ingredient of adipic acid. E357 sits in the E300–E399 series, which in the EU classification mainly covers antioxidants and acidity regulators.

What is E357 used for?

E357 belongs to the antioxidants group. Antioxidants stop fats going rancid and food discolouring. Several are natural, such as ascorbic acid (vitamin C).

Is E357 safe?

E357 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 E357 appears on labels

On food packaging you'll find E357 either as the number “E357” or by the name “Potassium adipate” 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 E357 vegan?

Yes, E357 is suitable for vegans.