What is E631?

Disodium inosinate (E631) is the disodium salt of inosinic acid with the chemical formula C10H11N4Na2O8P. It is used as a food additive and often found in instant noodles, potato chips, and a variety of other snacks. E631 sits in the E600–E699 series, which in the EU classification mainly covers flavour enhancers.

What is E631 used for?

E631 belongs to the flavour enhancers group. Flavour enhancers such as monosodium glutamate (E621) bring out taste. They are approved, though some prefer to limit them.

Is E631 safe?

E631 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 E631 appears on labels

On food packaging you'll find E631 either as the number “E631” or by the name “Disodium inosinate” 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 E631 vegan?

No, E631 is animal-derived and not suitable for vegans.