What is E404?

Calcium alginate is a water-insoluble, gelatinous, cream-coloured substance that can be created through the addition of aqueous calcium chloride to aqueous sodium alginate. Calcium alginate is also used for entrapment of enzymes and forming artificial seeds in plant tissue culture. E404 sits in the E400–E499 series, which in the EU classification mainly covers thickeners, stabilisers and emulsifiers.

What is E404 used for?

E404 belongs to the thickeners group. Thickeners and gelling agents give food texture and body. Many come from plants, like pectin and guar gum.

Is E404 safe?

E404 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 E404 appears on labels

On food packaging you'll find E404 either as the number “E404” or by the name “Calcium alginate” 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 E404 vegan?

Yes, E404 is suitable for vegans.