
Fine Pored Silica Gel

Transparent or translucent glass-like pellet or lump
Average pore diameter: 2.0-3.0 nm.
Specific surface area: 650-800 m2/g
Pore volume: 0.35-0.45 ml/g.
Specific heat : 0.92 KJ/kg.℃
Thermal conductivity: 0.63 KJ/m.hr.℃
Mainly used for drying and moistureproof, may also be used as catalyst carriers, absorbents, separators and variable-pressure absorbents, etc.
Typical Size: 2-5mm
Item |
Unit |
Specifications |
Typical values |
|||
|
|
Superior class |
First class |
Qualified class |
|
|
Adsorption capacity |
RH=20%,% |
≥% |
8 |
7 |
6 |
11.2 |
|
RH=50%,% |
≥% |
20 |
19 |
18 |
29.2 |
|
RH=90%,% |
≥% |
30 |
29 |
28 |
37.6 |
Loss on heating |
≤% |
2 |
4 |
6 |
1 |
|
|
|
|
|
|
|
|
PH Value |
|
4-8 |
-- |
-- |
4 |
|
Specific resistance |
≥cm |
3000 |
-- |
-- |
5630 |
|
Silica |
≥% |
98 |
-- |
-- |
98.5 |
|
Qualified ratic of spherical granules |
≥% |
82 |
-- |
-- |
90 |
|
Size |
mm |
* |
* |
* |
2-5 |
|
Bulk density |
g/L |
* |
* |
* |
784 |
|
Note: qualified ratio of spherical granules is only applicable to fine-pored silica gel |
25kg/bag palleted
It should be stored indoor under dry condition at room temperature. And exposure to the air water, acids and alkalies is not allowed.