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Annex II Entry 1699 24/08/2023

Barium diboron tetraoxide

Barium diboron tetraoxide 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: 1699

Chemical identity and properties

PubChem 2D chemical structure for CAS 13701-59-2
CAS 13701-59-2PubChem CID 6101043

Barium metaborate

IUPAC name
barium(2+);oxido(oxo)borane
Molecular formula
B2BaO4
Molecular weight
222.95 g/mol
Exact mass
223.903516 Da
Topological polar surface area
80.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
4
Covalent units
3
Defined stereocentres
0

Also known as

Boric acid (HBO2), barium salt (2:1)5SE5SRJ05NBarium diborateBarium diboron tetraoxideCaswell No. 071Busan 11M1BBO (optical crystal)UNII-5SE5SRJ05N
8 more reported names
Boric acid (HBO2), barium saltEINECS 237-222-4EPA Pesticide Chemical Code 011101B2BaO4EC 237-222-4BUSAN 11BARIUM BORATE (BAB2O4)BARIUM BORATE (BA(BO2)2)
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

Barium diboron tetraoxide

Regulatory information

Regulation

(EU) 2023/1490

See every entry this act set

Key data

CAS
13701-59-2
EC
237-222-4
Annex
II
Entry number
1699

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

Annex II 1695
Nearby record in the same annex

Ammonium bromide

CAS: 12124-97-9
EC: 235-183-8
Annex II 1703
Nearby record in the same annex

Benzophenone

CAS: 119-61-9
EC: 204-337-6

What Annex II means for Barium diboron tetraoxide

Barium diboron tetraoxide 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. Barium diboron tetraoxide 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 13701-59-2 is the unique numerical identifier assigned to Barium diboron tetraoxide 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 Barium diboron tetraoxide

This page summarizes one Annex II record for Barium diboron tetraoxide 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 Barium diboron tetraoxide, but confirm any final regulatory decision against the current official annex wording and source files.

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