Item

Guarantee Value

Typical value

Al₂O₃(%)

99 min

99.2-99.4

SiO₂(%)

0.35 max

0.08-0.25

Fe₂O₃ (%)

0.15 max

0.01-0.02

Na₂O(%)

0.3 max

0.19-0.25

Size

3-5,2-3,1-2.0.2-1,0.2-0.5,0.1-0.2mm