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 | 12352100 |