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Annex II Entry 1599 CMR30/07/2020

Cadmium hydroxide; cadmium dihydroxide

Cadmium hydroxide; cadmium dihydroxide is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.

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Prohibited substance— Annex II, EU Regulation 1223/2009
Entry: 1599
CMR

Chemical identity and properties

PubChem 2D chemical structure for CAS 21041-95-2
CAS 21041-95-2PubChem CID 10313210

Cadmium hydroxide

Cadmium hydroxide is a hydroxide of cadmium with the formula Cd(OH)2. It is used in storage battery anodes, in nickel-cadmium and silver-cadmium storage batteries, in cadmium plating, and to prepare other cadmium salts. Cadmium is a transition metal and chemical element with the symbol Cd and atomic number 48. It is found naturally in the earth's crust, though rarely on it's own. (L6, L468) — Toxin and Toxin Target Database (T3DB)

IUPAC name
cadmium(2+) dihydroxide
Molecular formula
CdH2O2
Molecular weight
146.43 g/mol
Exact mass
147.908844 Da
Topological polar surface area
2.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
2
Covalent units
3
Defined stereocentres
0

Also known as

Cadmium HydrateRefChem:53339cadmium(2+) ion dihydroxidecadmium hydroxide; cadmium dihydroxide244-168-5Cadmium dihydroxideCadmiumhydroxidecadmium(2+);dihydroxide
4 more reported names
CdH2O2CADMIUM HYDROXIDE [MI]PLLZRTNVEXYBNA-UHFFFAOYSA-LDB-254140
Open full PubChem recordPubChem annotations3D structure image

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

Cadmium hydroxide; cadmium dihydroxide

Chemical / IUPAC name

Cadmium hydroxide; cadmium dihydroxide

Regulatory information

Regulation

(EU) 2019/831

See every entry this act set

CMR

CategoryCarcinogenicMutagenicReprotoxic
Cat. 1B✓✓—

Key data

CAS
21041-95-2
EC
244-168-5
Annex
II
Entry number
1599

Direct matches are limited for this record, so nearby entries from Annex II are shown as well.

What Annex II means for Cadmium hydroxide; cadmium dihydroxide

Cadmium hydroxide; cadmium dihydroxide 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

Yes. Cadmium hydroxide; cadmium dihydroxide is listed in Annex II of EU Cosmetics Regulation 1223/2009 and is prohibited as an intentionally added cosmetic ingredient. Article 17 provides a narrow exception for unintended small quantities that are technically unavoidable under good manufacturing practice, provided the product remains safe under Article 3.

CAS 21041-95-2 is the unique numerical identifier assigned to Cadmium hydroxide; cadmium dihydroxide by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

Cadmium hydroxide; cadmium dihydroxide has a CMR (carcinogenic, mutagenic or reprotoxic) classification under EU CLP Regulation. Under Article 15 of EU Cosmetics Regulation 1223/2009, CMR substances of category 1A or 1B are prohibited in cosmetics unless specifically permitted. Category 2 CMR substances may be used only if assessed safe by the SCCS. Always verify current annex status and any applicable derogations before use.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
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Source note for Annex II record Cadmium hydroxide; cadmium dihydroxide

This page summarizes one Annex II record for Cadmium hydroxide; cadmium dihydroxide 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 Cadmium hydroxide; cadmium dihydroxide, but confirm any final regulatory decision against the current official annex wording and source files.

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