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Potassium bitartrate

Potassium bitartrate, also known as potassium hydrogen tartrate, with formula K C4 H5 O6, is a byproduct of winemaking. In cooking it is known as cream of tartar. It is the potassium acid salt of tartaric acid (a carboxylic acid). It can be used in baking or as a cleaning solution (when mixed with an acidic solution such as lemon juice or white vinegar).

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Further Information

Names

Other names

potassium hydrogen tartrate
cream of tartar
potassium acid tartrate
monopotassium tartrate
potassium;(2R,3R)-2,3,4-trihydroxy-4-oxobutanoate

Identifiers

CAS Number: 868-14-4

JSmol: Interactive image

ChemSpider: 12783

ECHA InfoCard: 100.011.609

PubChem: 13352

Properties

Chemical formula: KCHO456

Molar mass: 188.177

Appearance: white crystalline powder

Density: 1.05 g/cm (solid)

Solubility in water: 0.57 g/100mL (20 °C)
6.1 g/100mL (100 °C)

Solubility: acetic acid

Refractive index: 1.511

Pharmacology

ATC code: WHOA12BA03

Hazards

median dose: 22 g/kg (oral, rat)

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).

Infobox references