Property |
Value |
Appearance | Porous white powder with bluish tint |
Mass part of silicon dioxide, SiO2 wt%, min. | 99,9 |
Iron Oxide Fe2O3 wt%, max. | 0,003 |
Aluminium Oxide Al2O3 wt%, max. | 0,05 |
Titanium Dioxide TiO2 wt%, max. | 0,03 |
pH (in 4 % aqueous dispersion) | 3,8-4,5 |
Loss on heating, (2 hrs at 105 0С), wt.%, max. | 1,0 |
Loss on calcination, (2 hrs at 1000 0С), wt.%, max. | 1,0 |
Bulk density, g/dm3 | |
noncompacted | 40-60 |
compacted | 120-140 |
Specific surface, m2/gr by BET method | 150±20 |
Mass part of large particles (Grit), wt. %,max. | 0,04 |