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Potassium sodium tartrate

Potassium sodium tartrate
Potassium sodium tartrate structure
CAS No.
304-59-6
Chemical Name:
Potassium sodium tartrate
Synonyms
C4O6H2KNa;ROCHELLE SALTS;Rochelle's salt;ALKALINE TARTRATE;FEHLING B SOLUTION;FEHLING SOLUTION B;FEHLING'S REAGENT II;FEHLING'S SOLUTION B;FEHLING'S SOLUTION NO 2;SodiumPotassiumTartarate
CBNumber:
CB6690997
Molecular Formula:
C4H4KNaO6
Formula Weight:
210.16
MOL File:
304-59-6.mol

Potassium sodium tartrate Properties

Melting point:
70~80℃
Boiling point:
100 °C
Density 
1.24
form 
Liquid
color 
Clear Colorless
PH
7.0-8.5 (25℃, 1.5M in H2O)
optical activity
[α]20/D +22±1°, c = 1% in H2O
Water Solubility 
g anhydrous/100 g H2O: 31.9 (0°C), 67.8 (20°C), 102 (30°C) [LAN05]; slightly soluble alcohol [MER06]
λmax
λ: 260 nm Amax: 0.03
λ: 280 nm Amax: 0.025
FDA 21 CFR
184.1804; 582.1804; 582.6804; 331.11
Substances Added to Food (formerly EAFUS)
SODIUM POTASSIUM TARTRATE
SCOGS (Select Committee on GRAS Substances)
L(+)-sodium potassium tartrate
CAS DataBase Reference
304-59-6(CAS DataBase Reference)
EPA Substance Registry System
Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, monopotassium monosodium salt (304-59-6)
SAFETY
  • Risk and Safety Statements
Hazard Codes 
Risk Statements 
Safety Statements 
WGK Germany  WGK 3

Potassium sodium tartrate price More Price(2)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 81028 Potassium sodium tartrate solution BioUltra, 1.5 M in H2O 304-59-6 100ml-f $65.3 2020-08-18 Buy
Sigma-Aldrich 81028 Potassium sodium tartrate solution BioUltra, 1.5 M in H2O 304-59-6 500ml-f $238 2020-08-18 Buy

Potassium sodium tartrate Chemical Properties,Uses,Production

Description

Potassium sodium tartrate is a double salt first prepared (in about 1675) by an apothecary, Pierre Seignette, of La Rochelle, France. As a result the salt was known as Seignette's salt or Rochelle salt. Rochelle salt is not to be confused with rock salt, which is simply the mineral form of sodium chloride. Potassium sodium tartrate and mono potassium phosphate were the first materials discovered to exhibit piezo electricity.
It is a colorless to blue - white salt crystallizing in the orthorhombic system. Its molecular formula is KNaC4H4O6·4H2O. It is slightly soluble in alcohol but more completely soluble in water. It has a specific gravity of about 1.79, a melting point of approximately 75°C, and has a saline, cooling taste. As a food additive, its E number is E337.
It has been used medicinally as a laxative. It has also been used in the process of silvering mirrors. It is an ingredient of Fehling's solution, formerly used in the determination of reducing sugars in solutions.

Chemical Properties

often supplied as a colourless aqueous solution

Uses

Laxative.

Uses

Sodium Potassium Tartrate is a buffer and sequestrant that is the salt of i, (+)–tartaric acid. It has a solubility in water of 1 g in 1 ml. It is also termed rochelle salt and potassium sodium tartrate.

Definition

ChEBI: The organic sodium and potassium salt of L-tartaric acid (mol ratio 1:1:1).

Preparation

Potassium sodium tartrate, (KNaC4H4O6) may be prepared by adding 0.5 mole sodium carbonate to heated solution containing 1 mole potassium bitartrate(KHC4H5O6). (1M KHC4H4O6 : 0.5M Na2CO3). The solution is filtered while hot. This solution is then dried to precipitate solid potassium sodium tartrate, as small crystallites.
Larger crystals of Rochelle salt have been grown under conditions of reduced gravity and convection on board Skylab .

Purification Methods

Recrystallise it from distilled water (1.5mL/g) by cooling to 0o. [Beilstein 3 IV 1223.]

Potassium sodium tartrate Preparation Products And Raw materials

Raw materials

Preparation Products


Potassium sodium tartrate Suppliers

Global( 224)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-66670886
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0371-55170693 info@tianfuchem.com CHINA 22607 55
career henan chemical co
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CONIER CHEM AND PHARMA LIMITED
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Shaanxi Dideu Medichem Co. Ltd
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View Lastest Price from Potassium sodium tartrate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-08-26 Potassium Sodium Tartrate
304-59-6
US $10.00 / Kg/Drum 1KG 98% 10 ton Hebei Crovell Biotech Co Ltd
2021-07-13 Potassium sodium tartrate
304-59-6
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd
2021-07-10 Potassium sodium tartrate
304-59-6
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd

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