Calcium carbonate
CI 77220
Calcium carbonate appears in Annex IV as a positive-list colorant entry for EU cosmetics.
Chemical identity and properties

Calcium Carbonate
Calcium carbonate is a calcium salt with formula CCaO3. It has a role as a fertilizer, an antacid, a food colouring and a food firming agent. It is an inorganic calcium salt, a calcium salt, a carbonate salt and a one-carbon compound. — ChEBI
- IUPAC name
- calcium carbonate
- Molecular formula
- CCaO3
- Molecular weight
- 100.09 g/mol
- Exact mass
- 99.9473347 Da
- Topological polar surface area
- 63.2 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 3
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:3311
- ChEMBL:CHEMBL1200539
- EPA DTXSID:DTXSID3036238
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Record details
Warnings
Purity criteria as set out in Commission Directive 95/45/EC (E 170)
Colour index or glossary
CI 77220
Chemical name
Calcium carbonate
Chemical / IUPAC name
Calcium carbonate
Color
White
Regulatory information
Identified ingredients
Key data
Inventory links for Calcium carbonate
Related records for Calcium carbonate
Direct matches are limited for this record, so nearby entries from Annex IV are shown as well.
CI 77007
CI 77268:1
CI 77002
What Annex IV means for Calcium carbonate
Calcium carbonate is an approved colorant listed in Annex IV of EU Cosmetics Regulation 1223/2009. Only colorants on this positive list may be used to colour cosmetic products on the EU market.
Some colorants in Annex IV are restricted by product type — for example, prohibited from use around the eyes or in products applied to mucous membranes. Check the product type and conditions fields above before use.
This record is linked to 2 CosIng inventory ingredients for name and identifier cross-reference. The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.
Compliance checklist
- Confirm colorant is used only in permitted product types listed above.
- Record the Colour Index number and CAS identifier in the ingredient declaration.
Frequently asked questions
Source note for Annex IV record Calcium carbonate
This page summarizes one Annex IV record for Calcium carbonate from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.
Use this record page to review Annex IV conditions for Calcium carbonate, but confirm any final regulatory decision against the current official annex wording and source files.
Tools & next steps
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