Whiteness before burning 80%1%
SiO2 Max 49%
Al2O3 Min 35%
Fe2O3 Max 0.9%
TiO2  0.3%
CaO  0.2%
MgO  0.2%
K2O  0.5%
Na2O  0.1%
Physical properties
Loss on ignition 14%  0.5%
Moisture ≤ 9 %
Viscosity 200-400cp
Residue 325 mesh sieve  0.1%
pH 5,5
Physical form Lump