Property	A-175
SiO2 wt%, min.	99,9
Fe2O3 wt%, max.	0,003
Al2O3 wt%, max.	0,05
TiO2 wt%, max.	0,03
pH value (in 4 % aqueous dispersion)	3,8-4,5
Loss on drying (2hrs at 105°C) wt%, max.	1,5
Ignition loss (2hrs at 1000°C) wt%, max.	1,0
Bulk density, noncompacted, g/dm3	40-60
Bulk density, сompacted, g/dm3	120-140
Specific surface, m2/gr by BET method	175±25
Mass part of large particles (Grit), wt. %,max.	0,04