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E 503Acidity Regulators & Anti-caking Agents

Ammonium carbonates

Characteristics

Additive NameAmmonium carbonates
E No.E 503
TypeIndividual Substance
In plain language

A leavening agent used in baking — it helps dough rise by releasing carbon dioxide and ammonia gas when heated. Unlike baking soda or baking powder, the ammonia fully evaporates during baking, leaving no residue or taste. It's a traditional ingredient, historically called "baker's ammonia," still used in some European biscuits and crackers. Also used as an acidity regulator in certain dairy and infant food products. Generally considered safe at the levels found in food.

Conditions of Use

This additive is authorised to be used in the following 3 food categories:

13.1.3Processed cereal-based foods and baby foods as defined by Regulation (EU) No 609/2013
Quantum satis (no max)
only as rising agent
1.9Edible caseinates
Quantum satis (no max)
1.10Milk-based drinks and similar products intended for young children*
Quantum satis (no max)

Source

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E 503 - Ammonium carbonates | E-Number Information