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Potassium tartrate

Product Name:
Potassium tartrate
CAS No.
921-53-9
Chemical Name:
Potassium tartrate
CBNumber:
CB0723590
Molecular Formula:
C4H4K2O6
Formula Weight:
226.27
MOL File:
921-53-9.mol
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Potassium tartrate Property

Density 
1.954 g/mL at 25 °C(lit.)
Flash point:
200-220°C
Decomposition 
200-220 ºC
Stability:
Stable.
CAS DataBase Reference
921-53-9(CAS DataBase Reference)
EPA Substance Registry System
Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, dipotassium salt (921-53-9)
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Safety

Safety Statements 
24/25
WGK Germany 
1
RTECS 
WW8223000
HS Code 
29181300
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Potassium tartrate Chemical Properties,Usage,Production

Description

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.

Chemical Properties

white crystalline powder

Uses

Manufacture of potassium salts, medicine (cathartic), lab reagent.

Uses

Potassium tartrate is the acid potassium salt of tartaric acid occurring as crystals or powder. It is relatively poorly soluble having a solubility in 100 ml of water at 0.8 g at 25°c and 6.1 g at 100°c. A 1% solution at 30°c has a ph of 3.4. Chemical names are potassium acid tartrate, potassium hydrogen tartrate, and potassium bitartrate. It functions to complex with heavy metal ions and to regulate ph; it can have a gentle laxative action if given at adequate levels. The acidulant is used in chemical leavening to release carbon dioxide which produces the loaf volume. It has limited reactivity in the cold so when used in reduced-temperature batters it has little gas evolution during the initial mixing. At room temperatures, it has a relatively fast reaction rate. It functions as a taste regulator in sugar icing and in controlled crystallization of toffees and fondants by the regulated inversion of sucrose. It is used in baked goods, crackers, candy, and puddings.

Definition

ChEBI: The potassium salt of L-tartaric acid.

Preparation

Potassium tartrate is produced by the reaction of tartaric acid with potassium sodium tartrate (rochelle salt), and potassium sulfate, followed by filtration, purification, precipitation and drying.

Purification Methods

Recrystallise it from distilled water (solubility: 0.4mL/g at 100o, 0.7mL/g at 14o). [Beilstein 3 IV 1223.]

Potassium tartrate Preparation Products And Raw materials Raw materials

Raw materials

Preparation Products

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921-53-9, Potassium tartrateRelated Search:

Potassium sulfate Glycine POTASSIUM CYANIDE D(-)-Tartaric acid Potassium chloride Potassium Folic acid Potassium Bitartrate L-Carnitine-L-tartrate POTASSIUM PHOSPHITE Potassium Acetate SODIUM POTASSIUM TARTRATE TETRAHYDRATE*S IGMAULTRA,SODIUM POTASSIUM TARTRATE, TETRAHYDRATE,(+)-SODIUM POTASSIUM TARTRATE TETRAHYDRATE,SODIUM POTASSIUM TARTRATE L(+)-Tartaric acid Losartan potassium ANTIMONY POTASSIUM TARTRATE HYDRATE,ANTIMONY POTASSIUM TARTRATE,L-Antimony potassium tartrate,ANTIMONY(+3)POTASSIUM TARTRATE SESQUIHYDRATE,ANTIMONYL POTASSIUM TARTRATE,ANTIMONYL POTASSIUM TARTRATE SESQUIHYDRATE,Antimony potassium tartrate(C4H4O6K(SbO)1/2H2O),Antimony Potassium Tartrate Pentahydrate Metoprolol tartrate Ethyl 2-(Chlorosulfonyl)acetate Tylosin tartrate
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