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Annex II Entry 48 15/10/2010

Benzimidazol-2(3H)-one

Benzimidazol-2(3H)-one 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: 48

Chemical identity and properties

PubChem 2D chemical structure for CAS 615-16-7
CAS 615-16-7PubChem CID 11985

2-Hydroxy benzimidazole

IUPAC name
1,3-dihydrobenzimidazol-2-one
Molecular formula
C7H6N2O
Molecular weight
134.14 g/mol
Exact mass
134.048012819 Da
XLogP3
1.1
Topological polar surface area
41.1 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

RefChem:4655332-Hydroxybenzimidazoleo-Phenyleneurea1H-Benzimidazol-2-ol2-BENZIMIDAZOLINONE2-Benzimidazolol2-Benzimidazolone2H-Benzimidazol-2-one, 1,3-dihydro-
16 more reported names
1,3-Dihydro-2H-benzimidazol-2-one2(3H)-Benzimidazolone2-OxobenzimidazoleBenzamidazole-2(3H)-one2H-Benzimidazol2(3H)-OxobenzimidazoleN,N'-(1,2-Phenyleneurea)NSC 103831H-BENZO[D]IMIDAZOL-2-OL2(1H)-Benzimidazolone2-Hydroxy-benzimidazolNSC 178108benzimidazolinone2,3-dihydro-1H-1,3-benzodiazol-2-oneUrea, N,N'-(1,2-phenylene)-2-Hydroxy-1H-benzimidazole
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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

Benzimidazol-2(3H)-one

Chemical / IUPAC name

2H-Benzimidazol-2-one, 1,3-dihydro-; N,N'-(1,2-Phenyleneurea)

Regulatory information

Regulation

(EC) 2009/1223

See every entry this act set

Key data

CAS
615-16-7
EC
210-412-4
Annex
II
Entry number
48

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

Annex II 47
Nearby record in the same annex

Benzene

CAS: 71-43-2
EC: 200-753-7

What Annex II means for Benzimidazol-2(3H)-one

Benzimidazol-2(3H)-one 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).

Frequently asked questions

Yes. Benzimidazol-2(3H)-one 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 615-16-7 is the unique numerical identifier assigned to Benzimidazol-2(3H)-one 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.

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 Benzimidazol-2(3H)-one

This page summarizes one Annex II record for Benzimidazol-2(3H)-one 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 Benzimidazol-2(3H)-one, but confirm any final regulatory decision against the current official annex wording and source files.

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