Physical Properties
| 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 |
Packings
25kg
5000g
Safety Information and Hazard Symbols
Safety Statement: 22-24/25
Specifications
| Appearance | Black powder |
| Substance soluble in ethanol | Max 0.2% |
| Substance soluble in | HCl Max 1.0% |
| Chloride (Cl) | Max 0.2% |
| Sulphate (SO4) | Max 0.2% |
| Heavy metal (as Pb) | Max 0.005% |
| Iron (Fe) | Max 0.015% |
| Loss on drying (at 120°C) | Max 8.0% |
| pH Value | 6.5 to 7.5 |
| Methylene blue value | Min 240 |
- توجه :