What is E405?

Propylene glycol alginate (PGA) is an emulsifier, stabilizer, and thickener used in food products. It is a food additive with E number E405. E405 sits in the E400–E499 series, which in the EU classification mainly covers thickeners, stabilisers and emulsifiers.

What is E405 used for?

E405 belongs to the emulsifiers group. Emulsifiers help water and fat mix, found in everything from chocolate to bread. Most are considered safe.

Is E405 safe?

E405 is rated “moderate”. It is approved for use in food, but some people prefer to limit it. “Moderate” means it is approved, but is debated or something some people prefer to limit.

How E405 appears on labels

On food packaging you'll find E405 either as the number “E405” or by the name “Propylene glycol 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 E405 vegan?

Yes, E405 is suitable for vegans.