Physical Properties
| Physical state at 20 °C | Solid | Odour | Odorless |
| Melting point/ Freezing point [°C] | 48 °C | Solubility in water [% weight] | 79g/100 ml water @ 40C |
| Colour | Colorless crystals | pH value | 6-8.5 |
| Density [g/cm3] | 1.75 | Vapour density | 9.06 |
| Boiling point [°C] | > 100°C |
Packings
50kg
25kg
5000g
1000g
500g
Revision Date : 11-Mar-2016
Specifications
| Appearance | Large, colourless crystals or coarse crystalline powder |
| Assay (iodometric) | 99-100.5% |
| Identity | Passes test |
| Appearance of solution | Passes test |
| pH (5% solution in water) | 6.0 – 8.4 |
| Chloride (Cl) | Max 0.05% |
| Sulphate and Sulphite (as SO4) | Max 0.2% |
| Sulphide (S) | Passes test |
| Heavy metal (as Pb) | Max 0.001% |
| Calcium (Ca) | Passes test |
| Water (H2O) | 32.0 – 37.0% |
- توجه :