Chemical Specification 
Al2O399.6%
Na2O0.35%
SiO20.33%
Fe2O30.02%
TiO2
less Than 1%
Physical 
Hardness, Mohs9.
Hardness. Knoop2100
pH7-8
Specific Gravity3.77 gr/cc
AppearanceWhite Powder
OdorNone
Bulk Density1.5 - 1.8 gr/cc
Particle Size 
Micron% passing
6097%
5075%
4450%
4025%
306%

Packing: 50 lb boxes or nominal 350 lb drums

Origin: USA