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. See all acidity regulators (E-numbers).
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, or the guide to how EU additives are approved, re-evaluated and banned.
Is E333I vegan or vegetarian?
Monocalcium citrate (E333I) 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 E333I?
E333I appears in 5 of the 4.7 million products in Forkin's catalogue — most often in tortilla / wrap, lemon and cream-filled cookies.
- Tortilla / Wrap1
- Lemon1
- Cream-Filled Cookies1
- Pizza1
- Bread Rolls / Buns1
Often appears alongside
Additives most frequently found in the same ingredient lists as E333I 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 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.
- Which foods contain E333I?
- E333I appears in 5 of the 4.7 million products in Forkin's catalogue — most often in tortilla / wrap, lemon and cream-filled cookies. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
- Is E333I vegan or vegetarian?
- Monocalcium citrate (E333I) 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 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. See view pricing.