| Colour |
White |
| Odour |
Odourless |
| pH |
2.2 (50 g/L at 20°C) |
| Melting point |
135 – 152 °C |
| Boiling point |
175 °C |
| Flash point |
173.9 °C |
| Auto-ignition temperature |
1010 °C |
| Decomposition temperature |
> 170 °C |
| Flammability (solid, gas) |
Non flammable |
| Vapour pressure |
< 0.01 hPa at 25°C |
| Relative vapour density at 20 °C |
7.26 (Air = 1.0) |
| Density |
1.54 g/cm³ (20°C) |
| Solubility |
Water: 59.2 % (20°C) – Soluble; Ethanol: Soluble; Ether: Soluble; Acetone: Soluble |
| Insoluble matter (13.2% in water) |
Max 0.005% |
| Sulphate (SO₄) |
Max 0.002% |
| Residue on ignition (at 800°C) |
Max 0.02% |
| Lead (Pb) |
Max 0.0002% |
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