1. Name: silica gel
2. Molecular formula: SiO2
3. Molecular weight: 60.084
4.Physical and Chemical property:
Average pore diameter: 2.0-3.0nm
Specific surface area: 650-800 m2/g
Pore volume: 0.35-0.45ml/g
Specific heat: 0.92 KJ/kg.℃
Thermal conductivity: 0.63 KJ/m.hr.℃
5.Solubility: not dissolvable in water
6.Appearance:Transparent, translucent, glass-like pellet or lump
7.Package:25kgs per bag or 500kgs per bag
Applications:
Mainly used for drying and moistureproof, may also be used as catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc
Specification:
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|
Item
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Unit
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Typical Data
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|
|
|
|
|
|
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RH=20%
|
%
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≥11
|
|
|
|
|
|
|
Adsorption capacity
|
RH=50%
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%
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≥25
|
|
|
|
|
|
|
|
RH=90%
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%
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≥37
|
|
|
|
|
|
|
Loss on heating
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%
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≤4
|
|
|
|
|
|
|
PH value
|
|
|
4
|
|
|
|
|
|
|
Specific resistance
|
|
Ω.cm
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≥4000
|
|
|
|
|
|
|
Silica
|
|
%
|
≥98.5
|
|
|
|
|
|
Qualified ratio of spherical granules
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%
|
≥90
|
|
|
|
|
|
|
Size
|
|
mm
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2-5
|
|
|
|
|
|
|
Bulk density
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|
g/l
|
780
|
China
