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. See all acidity regulators (E-numbers).
Is E170I safe or restricted?
E170I is approved for use in the EU. It sits among the additives EFSA keeps under ongoing review as new evidence is published. Forkin classifies it as “Under monitoring” 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 E170I vegan or vegetarian?
Calcium carbonate (E170I) can be produced from plant, mineral, or animal-derived raw materials, and the ingredient list rarely states which source was used — so its vegan status genuinely depends on the specific product.
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 E170I?
E170I appears in 8,505 of the 4.7 million products in Forkin's catalogue — most often in cakes, protein bars and granola bars.
- Cakes328
- Protein Bars324
- Granola Bars257
- Cereals228
- Muesli180
- Chocolate Candy177
- Porridge / Hot Cereal158
- Chewing Gum156
Often appears alongside
Additives most frequently found in the same ingredient lists as E170I 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 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.
- Which foods contain E170I?
- E170I appears in 8,505 of the 4.7 million products in Forkin's catalogue — most often in cakes, protein bars and granola bars. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
- Is E170I vegan or vegetarian?
- Calcium carbonate (E170I) can be produced from plant, mineral, or animal-derived raw materials, and the ingredient list rarely states which source was used — so its vegan status genuinely depends on the specific product. The Forkin app shows the verified vegan and vegetarian status per product, since the source can vary between manufacturers.
- Is E170I safe, and is it banned anywhere?
- E170I is approved for use in the EU. It sits among the additives EFSA keeps under ongoing review as new evidence is published. Forkin classifies it as "Under monitoring" 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. See view pricing.