Monosodium citrate
Function: Emulsifier
E331I is the European food-additive number for Monosodium citrate, an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. MONOSODIUM CITRATE, more correctly, sodium dihydrogen citrate, is an acid salt of citric acid.
What is E331I used for?
Monosodium citrate (E331I) is an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. It is added during food production for a technological purpose rather than for nutrition.
Is E331I safe or restricted?
E331I is an approved food additive in the EU and currently carries no special regulatory restrictions in the EU additive register. Forkin classifies it as “No regulatory flags” and does not make health claims. See the methodology for how regulatory levels are assigned.
Frequently asked questions about E331I
- What is E331I?
- E331I is the E-number for Monosodium citrate, an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. MONOSODIUM CITRATE, more correctly, sodium dihydrogen citrate, is an acid salt of citric acid.
- What is E331I used for?
- Monosodium citrate (E331I) is an emulsifier — helps ingredients that normally separate, like oil and water, stay mixed. Manufacturers add it during processing rather than for nutrition. The Forkin app shows which products in your scan history actually contain it.
- Is E331I vegan or vegetarian?
- It depends on the source. Many additives can be produced from plant, mineral, or animal-derived raw materials, and the ingredient list rarely states which was used. The Forkin app shows the verified vegan and vegetarian status per product where it's known, instead of a blanket guess.
- Is E331I safe, and is it banned anywhere?
- E331I is an approved food additive in the EU and currently carries no special regulatory restrictions in the EU additive register. Forkin classifies it as "No regulatory flags" and does not make health claims — see the methodology page for how regulatory levels are assigned, and the Forkin app for the full profile, including acceptable daily intake (ADI) and restrictions by country.
See the full profile in Forkin
The Forkin app surfaces the full regulatory profile of E331I — acceptable daily intake (ADI), restrictions by country, vegan/vegetarian status, alternative names, and which products in your scan history contain it.