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Annex II Entry 1397 15/01/2026

Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10]

Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10] 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: 1397

Record details

Chemical name

Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10]

Chemical / IUPAC name

Sodium perborate [1]; Sodium peroxometaborate; sodium peroxoborate [2]

Regulatory information

Regulation

(EU) 2026/78

SCCS opinions

Identified ingredients

Key data

CAS
13517-20-9 [1], 37244-98-7 [2], 10486-00-7 [3], — [4], 15120-21-5 [5], 7632-04-4/10332-33-9/10486-00-7 [6], 11138-47-9 [7], 12040-72-1 [8], 10332-33-9 [9], 121-43-7 [10]
EC
239-172-9 [1], 234-390-0 [2], — [3], — [4], 239-172-9 [5], 231-556-4 [6], 234-390-0 [7], 234-390-0 [8], — [9], 204-468-9 [10]
Annex
II
Entry number
1397

Inventory links for Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10]

Inventory Restriction reference
Ref 38025

SODIUM PERBORATE

CAS: 15120-21-5 / 7632-04-4 / 11138-47-9
EC: 239-172-9 / 231-556-4 / 234-390-0

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

Annex II 1396
Nearby record in the same annex

Borates, tetraborates, octaborates and boric acid salts and esters, including: Disodium octaborate …

CAS: 12008-41-2 [1]/ 12280-03-4 [2]/ 10377-81-8 [3]/ 68003-13-4 [4]/ 12712-38-8 [5]/ -[6]/ 1332-07-6 [7]/ 1330-43-4 [8]/ 12267-73-1 [9]/ 13840-56-7 [10]/ 1303-96-4 [11]/ 12179-04-3 [12]
EC: 234-541-0 [1]/ 234-541-0 [2]/ 233-829-3 [3]/ 268-109-8 [4]/ 603-184-6 [5]/ -[6]/ 215-566-6 [7]/ 215-540-4 [8]/ 235-541-3 [9]/ 237-560-2 [10]/ 215-540-4 [11]/ 215-540-4 [12]

What Annex II means for Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10]

Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10] is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009. No concentration limit applies — the presence of this substance in any cosmetic product placed on the EU market is not permitted regardless of use level.

Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.

This record is linked to 1 CosIng inventory ingredient for name and identifier cross-reference. 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. Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10] is listed in Annex II of EU Cosmetics Regulation 1223/2009 as a prohibited substance. It must not be present in any cosmetic product placed on the EU market at any concentration.

CAS 13517-20-9 [1], 37244-98-7 [2], 10486-00-7 [3], — [4], 15120-21-5 [5], 7632-04-4/10332-33-9/10486-00-7 [6], 11138-47-9 [7], 12040-72-1 [8], 10332-33-9 [9], 121-43-7 [10] is the unique numerical identifier assigned to Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10] 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 Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10]

This page summarizes one Annex II record for Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10] 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 Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10], but confirm any final regulatory decision against the current official annex wording and source files.

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Paste a full INCI list to detect Perboric acid (H3BO2(O2)), monosodium salt trihydrate [1] Perboric acid, sodium salt, tetrahydrate [2] Perboric acid (HBO(O2)), sodium salt, tetrahydrate [3] Sodium peroxoborate, hexahydrate [4] Sodium perborate [5] Sodium peroxometaborate; sodium peroxoborate [6] Perboric acid, sodium salt [7] Perboric acid, sodium salt, monohydrate [8] Perboric acid (HBO(O2)), sodium salt, monohydrate [9] Trimethyl borate [10] and other flagged EU annex records in one pass.

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