Calcium carbonate
Function: Acidity Regulator
E170I is the European food-additive number for Calcium carbonate, an acidity regulator — used to control and stabilise the pH of a food. CALCIUM CARBONATE is a chemical compound with the formula CaCO3.
What is E170I used for?
Calcium carbonate (E170I) 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 E170I safe or restricted?
E170I 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 E170I
- What is E170I?
- E170I is the E-number for Calcium carbonate, an acidity regulator — used to control and stabilise the pH of a food. CALCIUM CARBONATE is a chemical compound with the formula CaCO3.
- What is E170I used for?
- Calcium carbonate (E170I) 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 E170I 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 E170I safe, and is it banned anywhere?
- E170I 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 E170I — acceptable daily intake (ADI), restrictions by country, vegan/vegetarian status, alternative names, and which products in your scan history contain it.