Official EU label nameGlossary entry 22561

POTASSIUM BIPHTHALATE

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

0 markets with evidence

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Markets with evidence

Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:877-24-7

EC:212-889-4

Ingredient index records:

POTASSIUM BIPHTHALATE

Cosmetic functions: BUFFERING

Potassium hydrogen phthalate

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1 matched or reported name

POTASSIUM BIPHTHALATE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name POTASSIUM BIPHTHALATE.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 877-24-7

CAS 877-24-7PubChem CID 23676735

Potassium hydrogen phthalate

IUPAC name: potassium 2-carboxybenzoate

Molecular formula: C8H5KO4
Molecular weight: 204.22 g/mol
Exact mass: 203.98249012 Da
Topological polar surface area: 77.4 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 4
Covalent units: 2
Defined stereocentres: 0

Also known as

Potassium biphthalateHydrogen potassium phthalatePotassium acid phthalate1,2-Benzenedicarboxylic acid, monopotassium saltGG9121M623RefChem:867719212-889-4Monopotassium phthalate

16 more reported names

Phthalic acid monopotassium saltpotassium;2-carboxybenzoatePotassium phthalate monobasicKHP1,2-Benzenedicarboxylic acid, potassium salt (1:1)P0309Phthalic acid monopotassiumF1905-7235Phthalic acid, monopotassium saltPotassium phthalate monobasic pound KHP pound(c)EINECS 212-889-4AI3-51765UNII-GG9121M623Phthalic acid monopopotassium hydrogen-phthalateC8H5KO4

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External database identifiers

ChEMBL:CHEMBL3187152
EPA DTXSID:DTXSID0042167

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

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

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 US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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