6381-59-5

Basic information

• Product Name: Potassium sodium tartrate tetrahydrate
• Synonyms: Butanedioic acid, 2,3-dihydroxy-, [R-(R*,R*)]-, monopotassium monosodium salt, tetrahydrate;Monopotassium monosodium tartrate tetrahydrate;potassiumsodiumtartrate(rochelle;potassiumsodiumtartrate(rochellesalt);Sodiumpotassiumtartrate,tetr;Sosiumpotassiumtartrate;L-(+)-ROCHELLE SALT;L(+)-TARTARIC ACID POTASSIUM SODIUM SALT TETRAHYDRATE
• CAS NO: 6381-59-5
• Molecular Formula: C₄H₄O₆*H₂O*K*Na
• Molecular Weight: 282.22
• EINECS: 206-156-8
• Product Categories: salt of an organic acid
• Mol File: 6381-59-5.mol
• Article Data: 0

Chemical Properties

• Melting Point: 70-80 °C
• Boiling Point: 399.3 °C at 760 mmHg
• Flash Point: 209.4 °C
• Appearance: White semi-transparent/Solid
• Density: 1.05 g/mL at 20 °C
• Vapor Pressure: 4.93E-08mmHg at 25°C
• Refractive Index: 22 ° (C=10, H2O)
• Storage Temp.: 2-8°C
• Solubility: H2O: 1 M at 20 °C, clear, colorless
• Water Solubility: 630 g/L (20 ºC)
• Merck: 14,7670
• BRN: 6113568
• CAS DataBase Reference: Potassium sodium tartrate tetrahydrate(CAS DataBase Reference)
• NIST Chemistry Reference: Potassium sodium tartrate tetrahydrate(6381-59-5)
• EPA Substance Registry System: Potassium sodium tartrate tetrahydrate(6381-59-5)

Safety Data

• Hazard Codes: F,T,C,Xi
• Statements: 22-35
• Safety Statements: 22-24/25-45-36/37/39-26
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 6381-59-5(Hazardous Substances Data)

Usage

Uses

Different sources of media describe the Uses of 6381-59-5 differently. You can refer to the following data:
1. Constituent of Fehling's solution
2. Potassium sodium tartrate tetrahydrate has been used in the preparation of Lowry reagent for the determination of microsomal protein concentration in rat hepatic microsomes by Lowry method. It may be used as a constituent to prepare DNS (3,5- dinitrosalicylic acid) reagent and Fehling′s solution B, which are used in the determination of reducing sugar.
3. Potassium sodium tartrate tetrahydrate has been used in the preparation of 3,5-dinitrosalicylic acid solution used in the determination of the reducing sugar.

Preparation

Potassium sodium tartrate tetrahydrate is obtained by the follow steps:The starting material is tartar with a minimum tartaric acid content 68 %. This is first dissolved in water or in the mother liquor of a previous batch. It is then basified with hot saturated sodium hydroxide solution to pH 8, decolorized with activated charcoal, and chemically purified before being filtered. The filtrate is evaporated to 42 °Bé at 100 °C, and passed to granulators in which Seignette's salt crystallizes on slow cooling. The salt is separated from the mother liquor by centrifugation, accompanied by washing of the granules.

General Description

Potassium sodium tartrate tetrahydrate is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient.

Biochem/physiol Actions

Potassium sodium tartrate tetrahydrate might be used as a buffering agent in cosmetic products. It is also used as a food additive. Certain studies show that it produces acute renal toxicity in rabbits and dogs.

Purification Methods

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

InChI:InChI=1/C4H6O6.K.Na.4H2O/c5-1(3(7)8)2(6)4(9)10;;;;;;/h1-2,5-6H,(H,7,8)(H,9,10);;;4*1H2/q;2*+1;;;;/p-2

Upstream product

• 526-94-3 sodium L-tartrate 
• 6381-59-5 sodium potassium racemate*4H₂O 
• 526-94-3 disodium DL-tartrate 
• 87-69-4 L-Tartaric acid 
• 1313-82-2 sodium sulfide 
• 147-71-7 D-tartaric acid 

Downstream Products

• 6106-24-7 L_g-tartaric acid ; disodium tartrate 
• 526-94-3 sodium L-tartrate 
• 4958-46-7 potassium racemate*2H₂O 
• 526-94-3 disodium DL-tartrate 
• 6381-59-5 sodium potassium racemate*3H₂O 
• 7440-44-0 pyrographite 
• 5892-21-7 calcium d-tartrate*4H2O 
• 868-14-4 potassium bitartrate 
• 75-07-0 acetaldehyde 
• 815-82-7 copper(II) d-tartrate