Product: Fine-pored Silica Gel (A type Silica Gel)
CAS NO: 112926-00-8
Molecular formula: SiO2.nH2O
Properties:
Transparent or translucent glass-like pellet or lump. Average pore diameter 2.0-3.0nm. Specific surface area 650-800 m2/g. Pore volume 0.35-0.45 ml/g. Specific heat 0.92 KJ/kg, ºC. Thermal conductivity 0.63 KJ/m.hr. ºC.
Application:
Mainly used for drying and moistureproof, may also be used for catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc.
Specification:
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Items
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Quality
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Superior grade
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First grade
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Qualified grade
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Adsorption capacity (%)
|
RH=20%
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10.5 min.
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10.0 min.
|
8.0 min.
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|
RH=50%
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23.0 min.
|
22.0 min.
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20.0 min.
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RH=90%
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34.0 min.
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32.0 min.
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30.0 min.
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Loss on Heating (%)
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2.0 max.
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4.0 max.
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6.0 max.
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PH
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4-8
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-
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-
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Specific resistance (Ω.cm)
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3000 min.
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-
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-
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Silica (%)
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98 min.
|
-
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-
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Qualified ratio of spherical granules (%)
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82 min.
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-
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-
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Size
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0.5-1.5mm, 0.5-1mm, 2-4mm, 2-5mm, 4-8mm, or Negotiable
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Bulk density (g/l)
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Negotiable
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Note: qualified ratio of granules is only applicable to fine-pored silica gel.
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|
