Official EU label nameGlossary entry 22756

POTASSIUM SODIUM TARTRATE

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.

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Resolved identifiers

Resolved substance identity

CAS:304-59-6

EC:206-156-8

Ingredient index records:

POTASSIUM SODIUM TARTRATE

Cosmetic functions: BUFFERING

Potassium sodium tartrate

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2 matched or reported names

POTASSIUM SODIUM TARTRATEpotassium sodium tartrate

Regulatory evidence across markets

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

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 304-59-6

CAS 304-59-6PubChem CID 9357

Potassium Sodium Tartrate

Potassium sodium L-tartrate is the organic sodium and potassium salt of L-tartaric acid (mol ratio 1:1:1). It has a role as a laxative. It is a potassium salt and an organic sodium salt. It contains a L-tartrate(2-). — ChEBI

IUPAC name: potassium;sodium;(2R,3R)-2,3-dihydroxybutanedioate

Molecular formula: C4H4KNaO6
Molecular weight: 210.16 g/mol
Exact mass: 209.95426361 Da
Topological polar surface area: 121.0 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 6
Covalent units: 3
Defined stereocentres: 2

Also known as

Rochelle saltSeignette saltSODIUM POTASSIUM TARTRATEMonopotassium monosodium tartrateSodium potassium L-tartratePotassium sodium L(+)-tartratePotassium sodium tartrate anhydrousP49F8NV7ES

16 more reported names

Tartaric acid, monopotassium monosodium salt2,3-Dihydroxybutanedioic acid, monopotassium monosodium saltButanedioic acid, 2,3-dihydroxy-, monopotassium monosodium saltCHEBI:63019INS NO.337Potassium sodium dextro-tartrateINS-337E-337Co eff pdrRefChem:570851Butanedioic acid, 2,3-dihydroxy-(2R,3R)-, monopotassium monosodium salt206-156-8613-385-0QH257BPV3J147-79-5CCRIS 3949

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External database identifiers

ChEBI:CHEBI:63019
EPA DTXSID:DTXSID60932999
EPA DTXSID:DTXSID90889341

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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