What is E530?

Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide). It has an empirical formula of MgO and consists of a lattice of Mg2+ ions and O2− ions held together by ionic bonding. E530 sits in the E500–E599 series, which in the EU classification mainly covers acidity regulators and anti-caking agents.

What is E530 used for?

E530 belongs to the anti-caking agents group. Anti-caking agents stop powders clumping, as in salt and spices.

Is E530 safe?

E530 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 E530 appears on labels

On food packaging you'll find E530 either as the number “E530” or by the name “Magnesium oxide” 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 E530 vegan?

Yes, E530 is suitable for vegans.