Physical state at 20 °C | Solid | Odour | Odorless |
Melting point/ Freezing point [°C] | 3550°C | Solubility in water [% weight] | Insoluble in water |
Colour | Black | pH value | 6-9 |
Density [g/cm3] | 1.8 – 2.1 | Auto-ignition temperature [°C] | 450 °C |
Boiling point [°C] | Sublimes | Vapour pressure [20°C] | < 0.01 hPa at 20 °C |
Vapour density | 0.4 |
Appearance | Black granules |
Substance soluble in ethanol | Max 0.2% |
Cyano compounds (CN) | Passes test |
Arsenic (As) | Max 0.0005% |
Lead (Pb) | Max 0.005% |
Heavy metal (as Pb) | Max 0.01% |
Iron (Fe) | Max 0.05% |
Polycyclic aromatics | Passes test |
Tar products | Passes test |
n-Hexane absorption | Min 20.0% |
Iodine adsorption | Min 800 mg/gm |