Grade | Average Particle Size (Malvern, um) | Loss on drying ≤ 10% | Loss on cauterant ≤ 10% | pH value (5% water suspension) | Oil absorption (g/100g) | Surface treatment | Sio2(dry) (%) |
DJ-220 | 5 - 6 | 5 | 4 - 6 | 6 - 7 | 260 - 340 | Organic | 98 |
DJ-221 | 5.5 – 6.5 | 5 | 4 - 6 | 6 - 7 | 260 - 340 | Organic | 98 |
DJ-222 | 4.5 -5.5 | 5 | 4 - 6 | 6 - 8 | 260 - 340 | Organic | 98 |