Monocalcium citrate
Function: Acidity Regulator
E333I is the European food-additive number for Monocalcium citrate, an acidity regulator — used to control and stabilise the pH of a food. Monocalcium citrate (E333i) is a sequestrant used as a food additive.
What is E333I used for?
Monocalcium citrate (E333I) is an acidity regulator — used to control and stabilise the pH of a food. It is added during food production for a technological purpose rather than for nutrition.
Is E333I safe or restricted?
E333I 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 E333I
- What is E333I?
- E333I is the E-number for Monocalcium citrate, an acidity regulator — used to control and stabilise the pH of a food. Monocalcium citrate (E333i) is a sequestrant used as a food additive.
- What is E333I used for?
- Monocalcium citrate (E333I) is an acidity regulator — used to control and stabilise the pH of a food. Manufacturers add it during processing rather than for nutrition. The Forkin app shows which products in your scan history actually contain it.
- Is E333I 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 E333I safe, and is it banned anywhere?
- E333I 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 E333I — acceptable daily intake (ADI), restrictions by country, vegan/vegetarian status, alternative names, and which products in your scan history contain it.