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CAS 13845-36-8 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 3648215/10/2010

PENTAPOTASSIUM TRIPHOSPHATE

Pentapotassium triphosphate

PENTAPOTASSIUM TRIPHOSPHATE 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 13845-36-8

CAS 13845-36-8PubChem CID 61695

Pentapotassium Triphosphate

The CIR Expert Panel concluded that the following 31 ingredients are safe in the present practices of use and concentration in cosmetics as described in this safety assessment, when formulated to be non-irritating...Pentapotassium Triphosphate... — Cosmetic Ingredient Review (CIR)

IUPAC name: pentapotassium;[oxido(phosphonatooxy)phosphoryl] phosphate

Molecular formula: K5O10P3
Molecular weight: 448.41 g/mol
Exact mass: 447.6889646 Da
Topological polar surface area: 185.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 10
Covalent units: 6
Defined stereocentres: 0

Also known as

potassium triphosphateKTPPTriphosphoric acid, potassium salt (1:5)Triphosphoric acid, pentapotassium saltNCS08RO8PBPotassium triphosphate (K5P3O10)RefChem:171461237-574-9

13 more reported names

EINECS 237-574-9K5O10P3POTASSIUM PHOSPHATE (K5P3O10)pentapotassiumTRIPHOSPHORIC ACID PENTAPOTASSIUM SALT CLASSIFICATION: INORGANICUNII-NCS08RO8PBPotassiumtriphosphatepotassium tri phosphatePotassium triphosphate (EC 237-574-9Potassium triphosphate, 94+%Potassium triphosphate (K5(P3O10))DB-042428

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID2047482

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 PENTAPOTASSIUM TRIPHOSPHATE

INCI name

PENTAPOTASSIUM TRIPHOSPHATE

Description

Pentapotassium triphosphate

Record provenance

Inventory reference: 36482
Imported identity: PENTAPOTASSIUM TRIPHOSPHATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for PENTAPOTASSIUM TRIPHOSPHATE

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Key data

CAS

13845-36-8

237-574-9

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.

#20424 · PENTAPOTASSIUM TRIPHOSPHATE

Ingredients with overlapping formulation functions

OXYQUINOLINE SULFATEANTIMICROBIAL, CHELATING

PALMITOYL NONAPEPTIDE-53CHELATING

PALMITOYL TETRAPEPTIDE-132 PENTAPEPTIDE-116ANTIOXIDANT; CHELATING

PENTAPEPTIDE-27ANTIOXIDANT, CHELATING, SKIN PROTECTING

PENTASODIUM AMINOTRIMETHYLENE PHOSPHONATECHELATING

PENTASODIUM ETHYLENEDIAMINE TETRAMETHYLENE PHOSPHONATECHELATING, VISCOSITY CONTROLLING

PENTASODIUM PENTETATECHELATING

PENTASODIUM TRIPHOSPHATEBUFFERING, CHELATING

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 PENTAPOTASSIUM TRIPHOSPHATE appears in the CosIng inventory

The CosIng inventory lists PENTAPOTASSIUM TRIPHOSPHATE 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.

PENTAPOTASSIUM TRIPHOSPHATE 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

PENTAPOTASSIUM TRIPHOSPHATE 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, PENTAPOTASSIUM TRIPHOSPHATE carries the following function designation(s):

CAS 13845-36-8 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 PENTAPOTASSIUM TRIPHOSPHATE

This page reproduces the CosIng inventory entry for PENTAPOTASSIUM TRIPHOSPHATE 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 PENTAPOTASSIUM TRIPHOSPHATE 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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