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ChemicalBook >> CAS DataBase List >>Potassium tartrate

Potassium tartrate

CAS No.
921-53-9
Chemical Name:
Potassium tartrate
Synonyms
POTASSIUM BITARTARATE;CREAM OF TARTAR;DIPOTASSIUM TARTRATE;POTASSIUM L-BITARTRATE;POTASSIUM ACID TARTRATE;Soluble tartar;Potassium (+POTASSIUM TARTRATE;Potassium tartarate;L-(+)-CREAM OF TARTAR
CBNumber:
CB0723590
Molecular Formula:
C4H4K2O6
Molecular Weight:
226.27
MDL Number:
MFCD00013065
MOL File:
921-53-9.mol
MSDS File:
SDS
Last updated:2026-06-09 13:55:31
Product description Number Pack Size Price
Potassium L-tartaric acid AR CS-0198146 100g $27
Potassium L-tartaric acid AR CS-0198146 500g $54
Potassium L-tartaric acid AR CS-0198146 100g $27
Potassium L-tartaric acid AR CS-0198146 500g $54
(2R,3R)-2,3-dihydroxysuccinic acid, potassium salt ≥99% AA006HVD 100g $10
More product size

Potassium tartrate Properties

Density 1.954 g/mL at 25 °C(lit.)
vapor pressure 0Pa at 25℃
Flash point 200-220°C
Decomposition 200-220 ºC
Stability Stable.
Cosmetics Ingredients Functions BUFFERING
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
InChIKey AVTYONGGKAJVTE-UHFFFAOYSA-L
SMILES [K+].[K+].C([O-])(=O)C(C(C([O-])=O)O)O
LogP -1.426 (est)
CAS DataBase Reference 921-53-9(CAS DataBase Reference)
FDA 21 CFR 184.1077(Potassium acid tartrate); 582.1077(Potassium acid tartrate)
EWG's Food Scores 1
FDA UNII O9WLL1ZL8S
EPA Substance Registry System Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, dipotassium salt (921-53-9)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P280-P305+P351+P338
Safety Statements  24/25
WGK Germany  1
RTECS  WW8223000
TSCA  TSCA listed
HS Code  29181300
REACH Registrations Active

Potassium tartrate price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
ChemScene CS-0198146 Potassium L-tartaric acid AR 921-53-9 100g $27 2026-06-04 Buy
ChemScene CS-0198146 Potassium L-tartaric acid AR 921-53-9 500g $54 2026-06-04 Buy
ChemScene CS-0198146 Potassium L-tartaric acid AR 921-53-9 100g $27 2026-06-04 Buy
ChemScene CS-0198146 Potassium L-tartaric acid AR 921-53-9 500g $54 2026-06-04 Buy
aablocks AA006HVD (2R,3R)-2,3-dihydroxysuccinic acid, potassium salt ≥99% 921-53-9 100g $10 2026-05-28 Buy
Product number Packaging Price Buy
CS-0198146 100g $27 Buy
CS-0198146 500g $54 Buy
CS-0198146 100g $27 Buy
CS-0198146 500g $54 Buy
AA006HVD 100g $10 Buy

Potassium tartrate Chemical Properties,Uses,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.

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.

Definition

ChEBI: The potassium salt of L-tartaric acid.

Flammability and Explosibility

Not classified

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

Preparation Products

Global( 289)Suppliers
Supplier Tel Email Country ProdList Advantage
Shaanxi Dideu Medichem Co. Ltd 		+86-29-81139210 +86-18192627656 1059@dideu.com China 3607 58
Hebei Chuanghai Biotechnology Co., Ltd 		+8615531151365 mina@chuanghaibio.com China 18126 58
Hebei Zhuanglai Chemical Trading Co.,Ltd 		+8613343047651 admin@zlchemi.com China 3692 58
career henan chemical co 		+86-0371-86658258 +8613203830695 sales@coreychem.com China 29815 58
CONIER CHEM AND PHARMA LIMITED 		+8618523575427 sales@conier.com China 49979 58
Shaanxi Dideu Medichem Co. Ltd 		+86-29-87569262 +86-15003564040 1056@dideu.com China 3970 58
Hebei Yanxi Chemical Co., Ltd. 		+8618531123677 faithe@yan-xi.com China 5853 58
Hebei Binshare New Material Co. Ltd 		+8618633865755 china01@hbbinshare.com CHINA 955 58
Hefei TNJ Chemical Industry Co.,Ltd. 		+86-0551-65418671 +8618949823763 sales@tnjchem.com China 34563 58
ANHUI WITOP BIOTECH CO., LTD 		+8615255079626 eric@witopchemical.com China 23541 58

View Lastest Price from Potassium tartrate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Potassium Tartrate pictures 2025-12-12 Potassium Tartrate
921-53-9
 $1.00-4.00 1KG 99% 200000KG Shaanxi Dideu Medichem Co. Ltd
Potassium tartrate pictures 2025-06-27 Potassium tartrate
921-53-9
 1KG 99% 500000kg Hebei Chuanghai Biotechnology Co., Ltd
Potassium Tartrate pictures 2025-04-15 Potassium Tartrate
921-53-9
 $120.00 1kg 99% 20ton Hebei Zhuanglai Chemical Trading Co.,Ltd
[r-(r*,r*)]-2,3-dihydroxybutanedioic acid dipotassium salt POTASSIUM HYDROGEN TARTARATE POTASSIUM L-TARTRATE MONOBASIC POTASSIUM (+)-TARTRATE POTASSIUM TARTRATE POTASSIUM HYDROGEN L-TARTRATE Dipotassium butanedioate (2R,3R)-2,3-Dihydroxybutanedioic acid dipotassium salt [2R,3R,(+)]-2,3-Dihydroxybutanedioic acid dipotassium salt L-(+)-Tartaric acid dipotassium salt,97% Soluble tartar Potassium tartrate ,99% Butanedioicacid, 2,3-dihydroxy- (2R,3R)-, potassiuM salt (1:2) Potassium tartrate semihydrate Butanedioicacid,2,3-dihydroxy-[R-(R*,R*)]-,dipotassiumsalt L-(+)-CREAM OF TARTAR L(+)TARTARIC ACID DIPOTASSIUM L-(+)TARTARIC ACID DIPOTASSIUM SALT L(+)-TARTARIC ACID MONOPOTASSIUM SALT POTASSIUM TARTRATE 1/2-HYDRATE Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, dipotassium salt l-2,3-dihydroxybutanedioic acid dipotassium salt 2,3-dihydroxy-[theta-(theta,theta)]-butanedioicacidipotassiumsalt Potassium tartrate, 99%, for synthesis Potassium tartrate, GR 98%+ )-Tartrate, Extra Pure, SLR, Fisher Chemical Potassium (&plus Potassium tartarate Potassium L-tartaric acid CREAM OF TARTAR DIPOTASSIUM TARTRATE POTASSIUM L-BITARTRATE POTASSIUM ACID TARTRATE POTASSIUM BITARTARATE Potassium Tartrate 99% 921-53-9 K2C4H4O412H2O KO2CCHOHCHOHCO2K C4H4O6K2 C4H6O62K K2C4H4O6 C4H4K2O6 Carboxylic Acid Salts Asymmetric Synthesis Chiral Building Blocks Chiral Resolution Reagents Chiral Resolving Reagents Organic Building Blocks Food additive and acidulant
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