What is E558?

Bentonite is an absorbent swelling clay consisting mostly of montmorillonite which can either be Na-montmorillonite or Ca-montmorillonite. Na-montmorillonite has a considerably greater swelling capacity than Ca-montmorillonite. E558 sits in the E500–E599 series, which in the EU classification mainly covers acidity regulators and anti-caking agents.

What is E558 used for?

E558 belongs to the anti-caking agents group. Anti-caking agents stop powders clumping, as in salt and spices.

Is E558 safe?

E558 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 E558 appears on labels

On food packaging you'll find E558 either as the number “E558” or by the name “Bentonite” 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 E558 vegan?

Yes, E558 is suitable for vegans.