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InventoryRef 7972215/10/2010

POTASSIUM PHOSPHATE

Potassium dihydrogenorthophosphate

POTASSIUM PHOSPHATE 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 16068-46-5

CAS 16068-46-5PubChem CID 62657

Potassium Phosphate, Tribasic

Tripotassium phosphate is an inorganic potassium salt that is the tripotassium salt of phosphoric acid. It is an inorganic phosphate salt and an inorganic potassium salt. — ChEBI

IUPAC name: tripotassium;phosphate

Molecular formula: K3O4P
Molecular weight: 212.266 g/mol
Exact mass: 211.8445399 Da
Topological polar surface area: 86.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 4
Covalent units: 4
Defined stereocentres: 0

Also known as

7778-53-2Tripotassium phosphatePotassium phosphate tribasicTripotassium orthophosphatePhosphoric acid, tripotassium saltPotassium orthophosphateCaswell No. 700APotassium phosphate (K3PO4)

16 more reported names

CCRIS 7321tribasic potassium phosphateEINECS 231-907-1Potassium pentahydrogen bis(phosphate)EPA Pesticide Chemical Code 07640716D59922JUPhosphoric acid potassium salt (1:3)Potassium phosphate, anhydrousINS NO.340(III)INS-340(III)CHEBI:190301EC 231-907-1E-340(III)EINECS 238-961-5Phosphoric acid, potassium salt (1:3)Phosphoric acid, potassium salt (2:1)

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External database identifiers

ChEBI:CHEBI:190301
EPA DTXSID:DTXSID3043994

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

PubChem 2D chemical structure for CAS 7778-77-0

CAS 7778-77-0PubChem CID 516951

Monobasic potassium phosphate

Potassium dihydrogen phosphate is a potassium salt in which dihydrogen phosphate(1) is the counterion. It has a role as a fertilizer. It is an inorganic phosphate and a potassium salt. — ChEBI

IUPAC name: potassium dihydrogen phosphate

Molecular formula: H2KO4P
Molecular weight: 136.086 g/mol
Exact mass: 135.93277702 Da
Topological polar surface area: 80.6 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 4
Covalent units: 2
Defined stereocentres: 0

Also known as

Potassium phosphate monobasicMONOPOTASSIUM PHOSPHATEPotassium acid phosphatePhosphoric acid, monopotassium saltPotassium phosphate, monobasicMonopotassium monophosphateMonopotassium orthophosphateMonopotassium dihydrogen phosphate

16 more reported names

potassium biphosphatePotassium dihydrogen orthophosphateKH2PO4Sorensen's potassium phosphatePotassium dihydrogenorthophosphatePotassium phosphate (K(H2PO4))Orthophosphoric acid, monopotassium saltHSDB 5046Potassium orthophosphate, dihydrogenEINECS 231-913-4Potassium phosphate,monobasicEPA Pesticide Chemical Code 076413Potassium hydrogen phosphate (KH2PO4)Phosphoric acid, potassium salt (1:1)4J9FJ0HL51INS NO.340(I)

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External database identifiers

ChEBI:CHEBI:63036
ChEMBL:CHEMBL1200925
EPA DTXSID:DTXSID0035667
PubMed:4539

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 PHOSPHATE

INCI name

POTASSIUM PHOSPHATE

INN name

potassium phosphate, monobasic

Ph. Eur. name

kalii dihydrogenophosphas

Description

Potassium dihydrogenorthophosphate

Record provenance

Inventory reference: 79722
Imported identity: POTASSIUM PHOSPHATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for POTASSIUM PHOSPHATE

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Key data

CAS

7778-77-0 / 16068-46-5

231-913-4 / 240-213-8

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.

Official EU ingredient-name evidence

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

#22744 · POTASSIUM PHOSPHATE

Ingredients with overlapping formulation functions

POTASSIUM HYDROXIDEBUFFERING

POTASSIUM LACTATEBUFFERING, HUMECTANT, SKIN CONDITIONING

POTASSIUM MAGNESIUM ASPARTATEBUFFERING, SKIN PROTECTING

POTASSIUM OXIDEBUFFERING

POTASSIUM SODIUM TARTRATEBUFFERING

POTASSIUM TARTRATEBUFFERING

PPG-70 BIS-(2-AMINOPROPYL) ETHERBUFFERING, BULKING, HAIR 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 PHOSPHATE appears in the CosIng inventory

The CosIng inventory lists POTASSIUM PHOSPHATE 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.

POTASSIUM PHOSPHATE 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 PHOSPHATE 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, POTASSIUM PHOSPHATE carries the following function designation(s):

BUFFERING

CAS 7778-77-0 / 16068-46-5 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 POTASSIUM PHOSPHATE

This page reproduces the CosIng inventory entry for POTASSIUM PHOSPHATE 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 POTASSIUM PHOSPHATE 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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