32312

Potassium sodium tartrate tetrahydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5% (perchloric acid titration)

• 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: 57648645
• NACRES: NA.21

Properties

• grade: ACS reagent; puriss. p.a.
• Quality Level: 200
• agency: USP/NF; reag. ISO; reag. Ph. Eur.
• assay: ≥99.5% (perchloric acid titration)
• impurities: ≤0.001% total nitrogen (N)
• pH: 7.0-8.5 (20 °C, 5%)
• anion traces: chloride (Cl^-): ≤5 mg/kg; phosphate (PO₄^3-): ≤10 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Ca: ≤40 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; Pb: ≤2 mg/kg; Zn: ≤5 mg/kg
• 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

Application

Potassium sodium tartrate tetrahydrate is a double salt of tartaric acid that can be used to prevent the precipitation in alkaline medium. It can also be used as a reagent in the determination of nitrilase activity.

Safety Information

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