Items

Specification

DX-S30

DX-S40

Form

White powder

White powder

Whiteness

98

98

SiO2 dry basis %

≥99.9

≥99.9

PH value

6.5-7.5

6.5-7.5

BET suface area m2/g

220-260

240-280

DBP absorption value ml/100g

280-320

320-360

Average particle size um

3-7

3-7

Sieve residue(45um) %

<0.05

<0.05

Heating loss (105 for 2hr.)%

2.0-3.0

2.0-3.0

lgnition loss ( 1000 gor 2hr.) %

3.0-4.0

3.0-4.0

Ircon content %

≤0.0015

≤0.0015

Soluble sale ( Na2SO4) %

≤0.02

≤0.02

Lead content %

≤0.0001

≤0.0001

Nacl content %

≤0.01

≤0.01

Heavy metal content %

≤0.001

≤0.001

Arsenic content %

≤0.0001

≤0.00001

package

10kg/bag

10kg/bag