Wood Charcoal
| Property | Specification |
| Appearance | Black, solid, porous lumps or powder |
| Shape | Irregular lumps or powder |
| Size | 10 mm to 50 mm (lumps) or 100 mesh (powder) |
| Moisture Content | < 10% |
| Ash Content | < 5% |
| Volatile Matter | 15% to 25% |
| Fixed Carbon | 70% to 85% |
| Bulk Density | 0.2 to 0.5 g/cm³ |
| Calorific Value | 25,000 to 30,000 kJ/kg |
| pH (in water) | 9 to 11 |
| Particle Density | 1.5 to 2.0 g/cm³ |
| Specific Surface Area | 150 to 350 m²/g |
| Hardness | 1 to 2 (on Mohs scale) |
| Fixed Carbon Content | 70% to 90% |