Ingredient Dictionary

POTASSIUM TARTRATE

Potassium L-tartrate is the potassium salt of L-tartaric acid.

Definition

Potassium L-tartrate is the potassium salt of L-tartaric acid. It contains a L-tartrate(2-).

Source: PubChem

US FDA substance register · UNII O9WLL1ZL8S · registered name POTASSIUM TARTRATE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Keeps pH steadyBUFFERING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name 酒石酸Ｋ: 本品は、酒石酸（＊）のカリウム塩であリ、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

POTASSIUM TARTRATEINCI포타슘타트레이트Korean label name (MFDS standard)Butanedioic acid, 2,3-dihydroxy- [R-(R+,R+)]-, dipotassium saltSynonym酒石酸ＫJapanese labelling name

CAS No.chemical registry number: 921-53-9
EC No.EU chemical inventory number: 213-067-8
DTXSIDUS EPA chemical ID: DTXSID90889442
DTXCIDUS EPA compound ID: DTXCID801028695

IUPAC: Dipotassium (2R,3R)-2,3-dihydroxybutanedioate
Molecular formula: C4H4K2O6
Molecular weight: 226.267 g/mol

Measured properties

Appearance: solid
Odour: odourless
Flash point: 209.4 ℃
Water solubility: 582 g/ℓ (20℃)
Auto-ignition temperature: 425 ℃ (1 atm)

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: KOSHA safety data sheets (Korea)

What products actually use it for

What the 4 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

pH regulating agent3
Processing aids not otherwise specified1

Source: US EPA CompTox dashboard