Potassium tartrate

Potassium tartrate

IUPAC name Dipotassium 2,3-dihydroxybutanedioate
Other names Dipotassium tartrate; Argol; E336
Identifiers
CAS number	921-53-9^N, (L)
PubChem	6100505
ChemSpider	2697916^Y
Jmol-3D images	Image 1
SMILES [K+].[K+].O=C([O-])C(O)C(O)C([O-])=O
InChI InChI=1S/C4H6O6.2K/c5-1(3(7)8)2(6)4(9)10;;/h1-2,5-6H,(H,7,8)(H,9,10);;/q;2+1/p-2^Y Key: AVTYONGGKAJVTE-UHFFFAOYSA-L^Y InChI=1/C4H6O6.2K/c5-1(3(7)8)2(6)4(9)10;;/h1-2,5-6H,(H,7,8)(H,9,10);;/q;2+1/p-2 Key: AVTYONGGKAJVTE-NUQVWONBAX
Properties
Molecular formula	C₄H₄K₂O₆
Molar mass	226.27 g/mol
N (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Potassium tartrate, dipotassium tartrate or argol has formula K₂C₄H₄O₆. It is the potassium salt of tartaric acid. It is often confused with potassium bitartrate, also known as cream of tartar. As a food additive, it shares the E number E336 with potassium bitartrate.

Other compounds

Tartar emetic is produced when potassium tartrate is heated with antimony trioxide. Tartar emetic causes intense nausea, prostration and vomiting by irritating the gastrointestinal mucosa. Potassium sodium tartrate (Rochelle salt) is produced by heating together solutions of potassium hydrogen tartrate and sodium carbonate.