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. See all emulsifiers (E-numbers).
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, or the guide to how EU additives are approved, re-evaluated and banned.
Is E331I vegan or vegetarian?
Monosodium citrate (E331I) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians.
The production source can vary between manufacturers — the Forkin app shows the verified vegan and vegetarian status per product. Always read the label for allergens.
Which foods contain E331I?
E331I appears in 231 of the 4.7 million products in Forkin's catalogue — most often in gummy candy, sugar-free sweeteners and cakes.
- Gummy Candy22
- Sugar-Free Sweeteners15
- Cakes10
- Pork (General)6
- Beef (General)6
- Chocolate Truffles / Pralines6
- Hard Candy3
- Ravioli / Filled Pasta3
Often appears alongside
Additives most frequently found in the same ingredient lists as E331I across the catalogue.
Counts reflect Forkin's independently enriched product catalogue and update as new products are added — they are not a market-share statistic.
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.
- Which foods contain E331I?
- E331I appears in 231 of the 4.7 million products in Forkin's catalogue — most often in gummy candy, sugar-free sweeteners and cakes. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
- Is E331I vegan or vegetarian?
- Monosodium citrate (E331I) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians. The Forkin app shows the verified vegan and vegetarian status per product, since the source can vary between manufacturers.
- 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. See view pricing.