What does the restriction note for POTASSIUM BORATE mean?

The restriction field for POTASSIUM BORATE reads: II/1396. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 1332-77-0?

CAS 1332-77-0 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains POTASSIUM BORATE?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3693729/07/2020

POTASSIUM BORATE

Dipotassium tetraborate

POTASSIUM BORATE is linked to 1 EU annex record on this page. Inventory note: II/1396.

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Regulatory evidence by market

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Market	Evidence status	Records	Source language
European Union	Evidence linked Prohibited entry found Open this evidence	1	English and EU languages
Great Britain	Source mapped Official source mapped; ingredient rule not imported	0	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Source mapped Official source mapped; ingredient rule not imported	0	English
ASEAN	Source mapped Official source mapped; ingredient rule not imported	0	English and national languages
China	Source mapped Official source mapped; ingredient rule not imported	0	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Source mapped Official source mapped; ingredient rule not imported	0	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Source mapped Official source mapped; ingredient rule not imported	0	Portuguese with INCI crosswalks
India	Source mapped Official source mapped; ingredient rule not imported	0	English and Hindi
Saudi Arabia	Source mapped Official source mapped; ingredient rule not imported	0	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 1332-77-0

CAS 1332-77-0PubChem CID 9816075

Potassium tetraborate

IUPAC name: dipotassium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane

Molecular formula: B4K2O7
Molecular weight: 233.4 g/mol
Exact mass: 233.9290360 Da
Topological polar surface area: 92.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 7
Covalent units: 3
Defined stereocentres: 0

Also known as

Dipotassium tetraborateRefChem:175432Boron potassium oxide (B4K2O7)Potassium borate (K2B4O7)ZV5114S322Boric acid, dipotassium saltBoric acid (H2B4O7), dipotassium saltUNII-ZV5114S322

7 more reported names

EINECS 215-575-5K2B4O7FZQSLXQPHPOTHG-UHFFFAOYSA-NPOTASSIUM TETRABORATE [MI]POTASSIUM TETRABORATE (K2B4O7)EC 215-575-5Dipotassium bicyclo[3.3.1]tetraboroxane-3,7-bis(olate)

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID2052782

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for POTASSIUM BORATE

INCI name

POTASSIUM BORATE

Description

Dipotassium tetraborate

Record provenance

Inventory reference: 36937
Imported identity: POTASSIUM BORATE
Source update: 29/07/2020

European Commission CosIng source notes

Annex records for POTASSIUM BORATE

Annex II Restriction reference

Entry 1396

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]

Key data

CAS

1332-77-0

215-575-5

Restriction

II/1396

Function

BUFFERING: Stabilising the pH of an aqueous medium in a narrow range even if an acid or base is added. Altering and/or maintaining a cosmetic product's pH at the desired level.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#22564 · POTASSIUM BORATE

Ingredients with overlapping formulation functions

POLYGLYCERYL-25/CAPROLACTONEBUFFERING, FILM FORMING, HAIR CONDITIONING, SOLVENT, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYI…

POTASSIUM BICARBONATEBUFFERING

POTASSIUM BIPHTHALATEBUFFERING

POTASSIUM BITARTRATEBUFFERING

POTASSIUM CARBONATEBUFFERING

POTASSIUM CITRATEBUFFERING, CHELATING

POTASSIUM HYDROXIDEBUFFERING

POTASSIUM LACTATEBUFFERING, HUMECTANT, SKIN CONDITIONING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How POTASSIUM BORATE appears in the CosIng inventory

The CosIng inventory lists POTASSIUM BORATE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

POTASSIUM BORATE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

POTASSIUM BORATE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for POTASSIUM BORATE reads: "II/1396". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, POTASSIUM BORATE carries the following function designation(s):

BUFFERING

CAS 1332-77-0 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for POTASSIUM BORATE

This page combines the CosIng inventory entry for POTASSIUM BORATE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research POTASSIUM BORATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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Tools & next steps

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