What is E507?

Hydrochloric acid, also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl). It is a colorless solution with a distinctive pungent smell. E507 sits in the E500–E599 series, which in the EU classification mainly covers acidity regulators and anti-caking agents.

What is E507 used for?

E507 belongs to the acids & acidity regulators group. Acids and acidity regulators adjust taste and shelf life, such as citric acid (E330).

Is E507 safe?

E507 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 E507 appears on labels

On food packaging you'll find E507 either as the number “E507” or by the name “Hydrochloric 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 E507 vegan?

Yes, E507 is suitable for vegans.