POTASSIUM HYDROGEN TARTARATE
POTASSIUM HYDROGEN TARTARATE
| Article No. | 541608 |
| Grade | Extra Pure |
| Purity | 99.5% |
| CAS No. | 868-14-4 |
| Molecular Formula | C4H5KO6 |
| Molecular Weight | 188.18 |
| H.S. Code | 2918.1310 |
| Shelf Life | 60 Months |
Physical properties
| Physical state at 20 °C | Solid |
| Colour | White powder |
| Odour | Odorless |
| pH value | 3.4 – 3.7 at 20 °C |
| Melting point/ Freezing point | > 250 °C |
| Density | 1.954 g/cm³ |
| Solubility in water | Slightly soluble in water |
Specifications
| Appearance | White or almost white, crystalline powder or colourless crystals |
| Assay | 99.5 – 100.5% |
| Solubility | Passes test |
| Identification | Passes test |
| Specific optical rotation ([α]20/D) | +8.0° to +9.2° |
| Oxalic acid | Max. 0.05% |
| Chloride (Cl) | Max. 0.05% |
| Sulphate (SO4) | Max. 0.05% |
| Barium (Ba) | Passes test |
| Heavy metal (as Pb) | Max. 0.001% |
| Loss on drying (at 105°C) | Max. 0.5% |
| Packings | 500 gm |
