Silicon Dioxide

Grade

Grade 150

Grade 200

Grade 300

Grade 380

Grade 215

Grade 615

Form

Power

Power

Power

Power

Power

Power

BET surface Area m2/g

150±10

200±15

300±20

380±20

100±20

170±20

PH value

3.8-4.2

3.8-4.2

3.8-4.2

3.8-4.2

3.7-4.5

3.7-4.5

Heating loss(105℃,2h) wt%

≤1.5

≤1.5

≤1.5

≤1.5

≤1.5

≤1.5

Ignition loss (1000℃,2h) wt%

≤1.5

≤1.5

≤1.5

≤1.5

≤2.5

≤2.5

SiO2 content (%)

≥99.99

≥99.99

≥99.99

≥99.99

≥99.99

≥99.99

Bulk Density (g/l)

40-60

40-60

40-60

40-60

40-60

40-60

Fe2O3 (mg/kg)

≤0.03%

≤0.03%

≤0.03%

≤0.03%

≤0.03%

≤0.03%

Al2O3(mg/kg)

≤0.02%

≤0.02%

≤0.02%

≤0.02%

≤0.02%

≤0.02%

Surface treatment

No

No

No

No

DDS

DDS