Skip to content

GREENVEIL

  • beauty
  • food
  • industrial

Potassium sodium tartrate

CAS 147-79-5 · 40/100 · High conf.

Also registered as 5 other CAS numbers

15490-42-3 · 19598-88-0 · 1029019-37-1 · 2089212-74-6 · 304-59-6

Potassium sodium tartrate chemical structure

Concern score

40/100Moderate concern based on regulatory listings.
High confidence

Potassium sodium tartrate in plain language

What it is

Also known as Anhydrous sodium potassium tartrate · Potassium sodium l(+)-tartrate · Potassium sodium tartrate anhydrous · Potassium sodium tartrate (E 337) · Potassium sodium (2R,3R)-2,3-dihydroxybutanedioate (1/1/1) · potassium;sodium;(2R,3R)-2,3-dihydroxybutanedioate

Show all 21 names

2,3-Dihydroxybutanedioic acid, monopotassium monosodium salt · Co eff pdr · E-337 · Ins NO.337 · INS-337 · Monopotassium monosodium tartrate · Potassium sodium dextro-tartrate · Rochelle salt · Seignette salt · Sodium potassium L-tartrate · Sodium potassium salt of L-(+)-tartaric acid · Tartaric acid, monopotassium monosodium salt · potassium sodium tartarate · potassium sodium tartrate; (sodium potassium tartrate) · sodium potassium tartrate

What it does

Used in cosmetics as a pH buffer.

  • Buffering
  • Sequestrant, stabilizer
  • Emulsifier
  • Chelating agent
  • pH adjuster
Is it a concern?
Moderate concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

Why it's flagged

EPA CPDat observed this chemical in 110 composition records across product categories including Construction and building materials, Laboratory supplies, Medical/dental.

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Potassium sodium tartrate appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • EUEFSAEFSA opinionRe-evaluation of L(+)-tartaric acid (E 334), sodium tartrates (E 335), potassium tartrates (E 336), potassium sodium tartrate (E 337) and calcium tartrate (E 354) as food additives (EFSA FAF)
    • Re-evaluation of L(+)-tartaric acid (E 334), sodium tartrates (E 335), potassium tartrates (E 336), potassium sodium tartrate (E 337) and calcium tartrate (E 354) as food additives (EFSA FAF)Source →
  • GLOBALJECFA0-30 mg/kg bwJECFA evaluation lists ADI 0-30 mg/kg bw. Functional class: sequestrant, stabilizer.
    • JECFA evaluation lists ADI 0-30 mg/kg bw. Functional class: sequestrant, stabilizer.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 110 composition records across product categories including Construction and building materials, Laboratory supplies, Medical/dental. EPA CPDat classifies this chemical for functional uses including pH regulating agent, Chelating agent, Emulsifier.
    • EPA CPDat observed this chemical in 110 composition records across product categories including Construction and building materials, Laboratory supplies, Medical/dental. EPA CPDat classifies this chemical for functional uses including pH regulating agent, Chelating agent, Emulsifier.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

  • EFSA

    European Food Safety Authority

    • Re-evaluation of L(+)-tartaric acid (E 334), sodium tartrates (E 335), potassium tartrates (E 336), potassium sodium tartrate (E 337) and calcium tartrate (E 354) as food additives (EFSA FAF)

      2020 · EU EFSA listing · Read the source →

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    • JECFA evaluation lists ADI 0-30 mg/kg bw. Functional class: sequestrant, stabilizer.

      Year not recorded · GLOBAL JECFA listing · Read the source →

Evidence & sources

No graded research studies for Potassium sodium tartrate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

8 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EFSA OpenFoodTox

    regulatory · updated 2026-10-04

    Open →

  • EPA Chemical and Products Database

    exposure · updated February 8, 2019

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • WHO JECFA Database

    regulatory · updated 2026-10-04

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →

  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Potassium sodium tartrate in a product composition. These are source records, not Greenveil catalog products.

Source records

110

Named organisations

2

Construction and building materialsLaboratory suppliesMedical/dentalHome maintenanceArts and crafts/office supplies

Typical roles

BufferingSequestrant, stabilizerEmulsifierChelating agentpH adjuster
See products using Potassium sodium tartrate →

Catalog

Found in these products

Their ingredient lists include Potassium sodium tartrate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 10 →Find products without it →