What is E503?

Ammonium carbonate is a chemical compound with the chemical formula [NH4]2CO3. It is an ammonium salt of carbonic acid. E503 sits in the E500–E599 series, which in the EU classification mainly covers acidity regulators and anti-caking agents.

What is E503 used for?

E503 belongs to the raising agents group. Raising agents make baked goods rise, like baking soda and baking powder.

Is E503 safe?

E503 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 E503 appears on labels

On food packaging you'll find E503 either as the number “E503” or by the name “Ammonium carbonates” 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 E503 vegan?

Yes, E503 is suitable for vegans.