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Fumed Silica
CAS number:112 945-52-5
Molecular formula:SiO2
Molecular weight:60.08
Customs code:2811229000
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Item  

Standard  

Specific Surface Area (m2/g)

200±30 

PH Value

3.7 ~ 4.5 

Loss on Drying at 105 (%)

3 max 

Loss on Ignition at 1000 (%) 

 2.5 max 

Sieve Residue (mg/kg)

250 max 

Tamped Density (g/l)

30 ~ 60 

SiO2 Content (%)

99.8 min 

Carbon Content (%)

0.02 max 

Chloride Content (mg/kg)

250 max 

Oxide Content (mg/kg)Al2O3 

400 max 

Oxide Content (mg/kg)TiO2 

200 max 

Oxide Content (mg/kg)Fe2O3 

30 max