217255

Potassium sodium tartrate tetrahydrate

ACS reagent, 99%

• Synonym(s): L(+)-Tartaric acid potassium Sodium salt, Rochelle salt, Seignette salt
• Linear Formula: KOCOCH(OH)CH(OH)COONa · 4H₂O
• CAS Number: 6381-59-5
• Molecular Weight: 282.22
• Beilstein/REAXYS Number: 6113568
• EC Number: 206-156-8
• MDL number: MFCD00150989
• UNSPSC Code: 12352100
• PubChem Substance ID: 24853005
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• agency: suitable for SM 4500 - NH3
• assay: 99%; 99.0-102.0% (ACS specification)
• form: powder or crystals
• impurities: ≤0.005% insolubles
• pH: 6.0-8.5
• anion traces: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤0.002%; sulfate (SO₄^2-): ≤0.005%
• cation traces: Ca: ≤0.005%; Fe: ≤0.001%; NH₄⁺: ≤0.002%; heavy metals: ≤5 ppm (by ICP)
• SMILES string: O.O.O.O.[Na+].[K+].O[C@H]([C@@H](O)C([O-])=O)C([O-])=O
• InChI: 1S/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/t1-,2-;;;;;;/m1....../s1
• InChI key: VZOPRCCTKLAGPN-ZFJVMAEJSA-L

Description

General description

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

Application

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.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• ppe: Eyeshields, Gloves, type N95 (US)