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CAS 37267-86-0 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.

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InventoryRef 3525415/10/2010

METAPHOSPHORIC ACID

Metaphosphoric acid

METAPHOSPHORIC ACID is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 37267-86-0

CAS 37267-86-0PubChem CID 3084658

Metaphosphoric Acid

Phosphonate(1-) is a monovalent inorganic anion obtained by deprotonation of one of the two OH groups in phosphonic acid. It is a phosphorus oxoanion and a monovalent inorganic anion. It is a conjugate base of a phosphonic acid. It is a conjugate acid of a phosphonate(2-). — ChEBI

IUPAC name: phosphenic acid

Molecular formula: HO3P
Molecular weight: 79.980 g/mol
Exact mass: 79.96633089 Da
XLogP3: -1.2
Topological polar surface area: 54.4 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

MTK99R3UV0RefChem:156792233-750-4253-433-4meta-Phosphoric acidhydrogenphosphonateUNII-MTK99R3UV0Phosphoric acid meta

16 more reported names

Metaphosphoric acid (HPO3)EINECS 253-433-4HO3PM phosphoric acidphosphonate(1-)hydrogen phosphonateEINECS 233-750-4hydrogen phosphonate ionSCHEMBL4646CHEBI:33462CHEBI:195297UEZVMMHDMIWARA-UHFFFAOYSA-N[PHO2(OH)](-)hydridohydroxidodioxidophosphate(1-)meta-Phosphoric acid, BioXtra, >=33.5%meta-Phosphoric acid, 100%, lumps (glassy)

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:195297
ChEBI:CHEBI:33462
EPA DTXSID:DTXSID10893985

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 METAPHOSPHORIC ACID

INCI name

METAPHOSPHORIC ACID

Description

Metaphosphoric acid

Record provenance

Inventory reference: 35254
Imported identity: METAPHOSPHORIC ACID
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for METAPHOSPHORIC ACID

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Key data

CAS

37267-86-0

253-433-4

Restriction

—

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.
CHELATING: Forming complexes with metal ions which could affect the stability and/or appearance of cosmetics.

Official EU ingredient-name evidence

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

#16296 · METAPHOSPHORIC ACID

Ingredients with overlapping formulation functions

KOJYL CARBOXY DIPEPTIDE-23ANTIOXIDANT, CHELATING, SKIN PROTECTING

KOJYL CARBOXY SH-NONAPEPTIDE-2ANTIOXIDANT, CHELATING, SKIN PROTECTING

LAUROYL ETHYLENEDIAMINE TRIACETIC ACIDCHELATING, SURFACTANT - CLEANSING

LYSINE AZELATEBLEACHING, CHELATING

METHOXYPHENYLSULFONAMIDO DIHYDROXYPROPANAMIDEANTICORROSIVE, CHELATING, ORAL CARE

METHYL CYCLODEXTRINCHELATING

METHYL DIHYDROXYBENZOATECHELATING

NICOTINOYL TRIPEPTIDE-1ANTIOXIDANT, CHELATING, SKIN PROTECTING

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 METAPHOSPHORIC ACID appears in the CosIng inventory

The CosIng inventory lists METAPHOSPHORIC ACID as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

METAPHOSPHORIC ACID is also tagged with 2 cosmetic functions 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

METAPHOSPHORIC ACID is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, METAPHOSPHORIC ACID carries the following function designation(s):

CAS 37267-86-0 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 METAPHOSPHORIC ACID

This page reproduces the CosIng inventory entry for METAPHOSPHORIC ACID from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research METAPHOSPHORIC ACID 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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