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Item

S-150

S-200

SiO2 content(%)

≥99.8

≥99.8

Specific surface area(m²/g)

150±30

200±30

Particle Size(μm)

12-15

12-15

Heating loss 105℃ 2h(%)

≤1.0

≤1.5

Ignition loss 1000℃ 2h(%)

≤1.5

≤2.0

PH Value

3.5-4.5

3.5-4.5

Al2O3(mg/kg)

≤400

≤400

TiO2(mg/kg)

≤200

≤200

Fe2O3(mg/kg)

≤30

≤30

Chloride(mg/kg)

≤250

≤250

Carbon(mg/kg)

≤0.2

≤0.2