Physical state at 20 °C | Solid | Odour | Odorless |
Solubility in water [% weight] | Appreciable (> 10%) |
Appearance | Colorless or white crystals/powder |
Chloride (Cl) | Max 0.05% |
Sulphate (SO4) | Max 0.05% |
Iron (Fe) | Max 0.005% |
Heavy metal (as Pb) | Max 0.001% |
Loss on ignition (at 700°C) | 50 – 60% |