Cobalt carbonate
Cobalt carbonate is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.
Chemical identity and properties

Cobaltous carbonate
Cobalt(II) carbonate is a chemical compound of cobalt. It occurs naturally as the mineral spherocobaltite and is used in pottery glazes. Cobalt is a metallic element with the atomic number 27. It is found naturally in rocks, soil, water, plants, and animals. In small amounts cobalt is an essential element for life, as it is part of vitamin B12. However, excess exposure is known to exhibit toxic effects. (L29, L30, L31) — Toxin and Toxin Target Database (T3DB)
- IUPAC name
- cobalt(2+) carbonate
- Molecular formula
- CCoO3
- Molecular weight
- 118.942 g/mol
- Exact mass
- 118.917937 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
- EPA DTXSID:DTXSID7052151
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
Chemical name
Cobalt carbonate
Chemical / IUPAC name
Cobalt carbonate
Regulatory information
CMR
| Category | Carcinogenic | Mutagenic | Reprotoxic |
|---|---|---|---|
| Cat. 1B | ✓ | — | ✓ |
| Cat. 2 | — | ✓ | — |
Key data
Related records for Cobalt carbonate
Direct matches are limited for this record, so nearby entries from Annex II are shown as well.
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(4-Phenylbutyl)phosphinic acid
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Reaction mass of: dimethyl (2-(hydroxymethylcarbamoyl)ethyl)phosphonate; diethyl (2-(hydroxymethylc…
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What Annex II means for Cobalt carbonate
Cobalt carbonate is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.
Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.
The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.
Compliance checklist
- Verify this substance is absent from all raw materials and finished formulations.
- Request absence confirmation or CoA from raw material suppliers.
- Document the screening result in the Product Information File (PIF).
- This substance has CMR classification. Review the CMR table above and verify current Annex II/III status before use.
Frequently asked questions
Source note for Annex II record Cobalt carbonate
This page summarizes one Annex II record for Cobalt carbonate from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.
Use this record page to review Annex II conditions for Cobalt carbonate, but confirm any final regulatory decision against the current official annex wording and source files.
Tools & next steps
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