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CAS 7320-34-5 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 8075115/10/2010

TETRAPOTASSIUM PYROPHOSPHATE

Tetrapotassium pyrophosphate

TETRAPOTASSIUM PYROPHOSPHATE 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 7320-34-5

CAS 7320-34-5PubChem CID 23740

Potassium pyrophosphate

Potassium tetrapyrophosphate is a whitish-colored powdered solid. It is toxic by ingestion, and/or inhalation. Contact with the substance should be avoided. — CAMEO Chemicals

IUPAC name: tetrapotassium;phosphonato phosphate

Molecular formula: K4O7P2
Molecular weight: 330.34 g/mol
Exact mass: 329.7667523 Da
Topological polar surface area: 136.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 7
Covalent units: 5
Defined stereocentres: 0

Also known as

Potassium diphosphateTKPPTETRAPOTASSIUM PYROPHOSPHATEDiphosphoric acid, tetrapotassium saltTetrapotassium diphosphoratePyrophosphoric acid, tetrapotassium saltB9W4019H5GRefChem:897424

16 more reported names

230-785-7Tetrapotassium diphosphatePotassium pyrophospateDiphosphoric acid, potassium saltEINECS 230-785-7UNII-B9W4019H5GTetra Potassium PyrophosphatePotassium pyrophosphate AnhydrousEC 230-785-7Diphosphoric acid, potassium salt (1:4)tetrapotassium phosphonato phosphateEINECS 233-338-4Diphosphoric acid tetrapotassium saltK4O7P2Potassium diphosphate tetrabasicPotassium pyrophosphate, anhydrous

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID3036446

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 TETRAPOTASSIUM PYROPHOSPHATE

INCI name

TETRAPOTASSIUM PYROPHOSPHATE

Description

Tetrapotassium pyrophosphate

Record provenance

Inventory reference: 80751
Imported identity: TETRAPOTASSIUM PYROPHOSPHATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for TETRAPOTASSIUM PYROPHOSPHATE

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Key data

CAS

7320-34-5

230-785-7

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.
ORAL CARE: Providing cosmetic effects to the oral cavity, e.g. cleansing, deodorising, protecting.

Official EU ingredient-name evidence

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

#28678 · TETRAPOTASSIUM PYROPHOSPHATE

Ingredients with overlapping formulation functions

TETRAHYDROXYPROPYL ETHYLENEDIAMINECHELATING

TETRAHYDROXYPROPYL ETHYLENEDIAMINE DIOLEATECHELATING

TETRAMETHYLDECENEDIONEBLEACHING, CHELATING

TETRAPOTASSIUM ETIDRONATECHELATING

TETRASODIUM DICARBOXYMETHYL ASPARTATECHELATING

TETRASODIUM EDTACHELATING

TETRASODIUM ETIDRONATECHELATING, EMULSION STABILISING, VISCOSITY CONTROLLING

TETRASODIUM GLUTAMATE DIACETATECHELATING

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 TETRAPOTASSIUM PYROPHOSPHATE appears in the CosIng inventory

The CosIng inventory lists TETRAPOTASSIUM PYROPHOSPHATE 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.

TETRAPOTASSIUM PYROPHOSPHATE is also tagged with 3 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

TETRAPOTASSIUM PYROPHOSPHATE 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, TETRAPOTASSIUM PYROPHOSPHATE carries the following function designation(s):

CAS 7320-34-5 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 TETRAPOTASSIUM PYROPHOSPHATE

This page reproduces the CosIng inventory entry for TETRAPOTASSIUM PYROPHOSPHATE 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 TETRAPOTASSIUM PYROPHOSPHATE 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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