Features
Physical and chemical index:
Index \ variety |
TD-235 |
TD-235Y |
SiO2(dry base)% |
99 |
99 |
Pore volume ml/g |
1.6-1.85 |
1.6-1.85 |
Average grain diameter µm |
4-5 |
4-5 |
Loss on drying % 105℃ 2 hours |
3 |
3 |
Loss on ignition % 950℃ 2 hours |
4 |
12 |
pH(5% water suspension) |
6 ~ 7 |
6 ~ 7 |