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di SODIUM TARTRATE DIHYDRATE AR/ACS
Volumetric standard for the standardisation of KARL FISCHER reagent for use in the determination of water.
| Article No. | Grade | Purity | CAS No. | Molecular Formula | Molecular Weight | H.S. Code | Shelf Life |
|---|---|---|---|---|---|---|---|
| SC2181 | AR/ACS | 99.00% | 6106-24-7 | C4H4Na2O6.2H2O | 230.08 | 2918.1390 | 60 Months |
Packings
| 250 g,500 g |
Physical Properties
| Physical state at 20 °C | Solid |
| Colour | White crystalline |
| Odour | Slight tartaric odor |
| pH value | 7 - 9 at 50 g/l at 20 °C |
| Melting point/ Freezing point [°C] | 120°C |
| Density [g/cm3] | 1.82 |
| Solubility in water [% weight] | 29 g/100 g water at 60C |
Specifications
| Appearance | White crystalline powder |
| Assay (by HClO4 titration) | 99.0-101.0% |
| Identity (IR) | Passes test |
| Optical rotation (c = 10%; H2O) | +25.0° to +27.0° |
| Insoluble matter (10% in water) | Max 0.005% |
| pH (5% solution in water; 25°C) | 7.0 - 9.0 |
| Loss on drying (150°C to constant weight) | 15.61 - 15.71 % |
| Chloride (Cl) | Max 0.0005% |
| Iron (Fe) | Max 0.001% |
| Heavy metal (as Pb) | Max 0.0005% |
| Ammonium (NH4) | Max 0.003 % |
| Sulphate (SO4) | Max 0.005% |
| Phosphate (PO4) | Max 0.0005% |
| Calcium (Ca) | Max 0.01% |
Safety Information and Hazard Symbols
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