Potassium sodium tartrate tetrahydrate
SIGMA/60413 - BioUltra, ≥99.5% (NT)
Synonym: L(+)-Tartaric acid potassium Sodium salt; Rochelle salt; Seignette salt
CAS Number: 6381-59-5
Empirical Formula (Hill Notation): C4H4KNaO6 · 4H2O
Molecular Weight: 282.22
EC Number: 206-156-8
MDL Number: MFCD00150989
Linear Formula: KOCOCH(OH)CH(OH)COONa · 4H2O
Product Type: Chemical
λ | 1 M in H2O |
anion traces | chloride (Cl-): ≤5 mg/kg |
phosphate (PO43-): ≤10 mg/kg | |
sulfate (SO42-): ≤50 mg/kg | |
assay | ≥99.5% (NT) |
cation traces | Al: ≤5 mg/kg |
As: ≤0.1 mg/kg | |
Ba: ≤5 mg/kg | |
Bi: ≤5 mg/kg | |
Ca: ≤10 mg/kg | |
Cd: ≤5 mg/kg | |
Co: ≤5 mg/kg | |
Cr: ≤5 mg/kg | |
Cu: ≤5 mg/kg | |
Fe: ≤5 mg/kg | |
Li: ≤5 mg/kg | |
Mg: ≤5 mg/kg | |
Mn: ≤5 mg/kg | |
Mo: ≤5 mg/kg | |
Ni: ≤5 mg/kg | |
Pb: ≤5 mg/kg | |
Sr: ≤5 mg/kg | |
Zn: ≤5 mg/kg | |
form | solid |
impurities | insoluble matter, passes filter test |
≤0.002% total nitrogen (N) | |
InChI | 1S/C4H6O6.K.Na.4H2O/c5-1( |
InChI key | VZOPRCCTKLAGPN-ZFJVMAEJSA |
optical activity | [α]20/D +22±1°, c = 1% in H2O |
pH | 7.0-8.5 (25 °C, 1 M in H2O) |
product line | BioUltra |
Quality Level | 200 |
SMILES string | O.O.O.O.[Na+].[K+].O[C@H] |
solubility | H2O: 1 M at 20 °C, clear, colorless |
UV absorption | λ: 260 nm Amax: 0.026 |
λ: 280 nm Amax: 0.022 |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 3 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
Purity | ≥99.5% (NT) |
UNSPSC | 12352200 |