Properties and test methods | Unit | Typical Value |
Porosity | ml/g | ≥ 1.8 |
pH value (5% in water) | 6.0-8.0 | |
Loss on drying (2 hours at 105 °C) | Wt% | ≤ 5.0 |
Loss on ignition (2 hours at 1000 °C) | Wt% | ≤ 6.0 |
Particle size(Malvent) | μm | 7.5-8.0 |
Oil absorption | g/100g | 220-270 |
Content of SiO2 (Dry basis) | Wt% | ≥ 99.0 |
Whiteness | ≥ 93.0 | |
Surface treatment | Special |