TYPICAL CHEMICAL SPECIFICATION
SiO299.3
Fe2O30.04
Al2030.10
Ti020.02
CaO0.02
MgO0.02
TYPICAL PHYSICAL SPECS
ShapePlatelets in clusters
Spec. Gravity2.65
Index of Refraction1.55
pH6.0-7.0
Hardness
7 mohs
LOI at 1000 ̊C0.2%
Oil absorption of the unmodified silica
17-20 spatula method
PARTICLE SIZE FOR TWO GRADES, as % passing
Size325 grade1250 grade
75u          200 mesh99%100%
44u          325 “
93-98
99-100%
20u---94%
average
13 micron
9 micron
ORIGIN: USA

PACKING: 50 lb bags or pallets ; Super Sacks