Potassium sodium tartrate tetrahydrate - 25508H
Code: 25508H
Potassium sodium tartrate tetrahydrate
99.0-101.0% (calc. on H2O free substance)
99.0-101.0% (calc. on H2O free substance), meets analytical specification of Ph. Eur., BP, USP, FC, E 337
CAS Number: 6381-59-5
Molar Mass: 282.22 g/mol
| Property |
Value |
| Assay (calculated on the anhydrous basis) |
99.0 - 101.0 % |
| Assay (HClO4-titr./calculated with reference to anhydrous substances) |
99.0 - 101.0 % |
| Specific rotation (a) 20/D |
28.0 - 30.0 ° |
| Water (Karl Fischer) |
24.0 - 26.0 % |
| Loss on drying (150°C, 3h) |
21.0 - 26.0 % |
| Acidity or alkalinity |
complying |
| Free acid (as C4H6O6) |
max. 0.0075 % |
| Free alkali (as NaOH) |
max. 0.004 % |
| Ammonium (NH4) |
max. 40 ppm |
| Arsenic (As) |
max. 1 ppm |
| Calcium (Ca) |
max. 50 ppm |
| Iron (Fe) |
max. 0.001 % |
| Mercury (Hg) |
max. 1 ppm |
| Lead (Pb) |
max. 2 ppm |
| Heavy metals (as Pb) |
max. 10 ppm |
| Chloride (Cl) |
max. 20 ppm |
| Oxalate (as Oxalic acid) |
max. 100 ppm |
| Barium, oxalate |
complying |
| Sulfate (SO4) |
max. 50 ppm |
| Appearance of the solution |
complying |
| Residual solvents |
complying |
| Property |
Value |
| Freezing point |
70 - 80 °C |
| Density |
1.79 g/cm3 |
