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InventoryRef 3693615/10/2010

POTASSIUM BIPHTHALATE

Potassium hydrogen phthalate

POTASSIUM BIPHTHALATE 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 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 Ų
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
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 BIPHTHALATE

INCI name

POTASSIUM BIPHTHALATE

Description

Potassium hydrogen phthalate

Record provenance

Inventory reference
36936
Imported identity
POTASSIUM BIPHTHALATE
Source update
15/10/2010
European Commission CosIng source notes
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Key data

CAS
877-24-7
EC
212-889-4
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.

Official EU ingredient-name evidence

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

#22561 · POTASSIUM BIPHTHALATE

Ingredients with overlapping formulation functions

PHOSPHORIC ACIDBUFFERING
PHOSPHORUS PENTOXIDEBUFFERING, CHELATING
POLYGLYCERYL-25/CAPROLACTONEBUFFERING, FILM FORMING, HAIR CONDITIONING, SOLVENT, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYI…
POTASSIUM BICARBONATEBUFFERING
POTASSIUM BITARTRATEBUFFERING
POTASSIUM BORATEBUFFERING
POTASSIUM CARBONATEBUFFERING
POTASSIUM CITRATEBUFFERING, 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 chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How POTASSIUM BIPHTHALATE appears in the CosIng inventory

The CosIng inventory lists POTASSIUM BIPHTHALATE 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 BIPHTHALATE 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 BIPHTHALATE 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 BIPHTHALATE carries the following function designation(s):

CAS 877-24-7 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 BIPHTHALATE

This page reproduces the CosIng inventory entry for POTASSIUM BIPHTHALATE 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 BIPHTHALATE 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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