Silica gel is silicone dioxide (SiO2). It is a naturally occurring mineral that is purified and processed into either granular or beaded form. As a desiccant, it has an average pore size of 2.4 nanometers and has a strong affinity for water molecules.
Silica gel perform best at room temperature (70oF – 90o) and high Relative Humidity (RH 60 to 90%) and will drop the relative humidity in a container down to around RH 40%. Silica gel has been approved by the FDA, which is widely use in food and pharmaceutical application.
Technical Data Sheet (TDS)
Name: NARROW-PORED SILICA GEL
(Item) |
(Specification) |
（Superior） |
（Normal） |
(Size) |
1-3MM\2-5MM |
(Appearance) |
(Granule, Transparent, Translucent) |
(Adsorption Capacity) , % |
RH=20% ≥ ％ |
10.7 |
10.3 |
RH=50% ≥ ％ |
25.5 |
24.7 |
RH=90% ≥ ％ |
37 |
35.4 |
Ratio of Size Qualified，% ≥ |
99.9 |
99.9 |
PH Value |
4.63 |
4.36 |
Specific Resistance , Ω.cm ≥ |
3500 |
3200 |
Silica，% ≥ |
99 |
99 |
Bulk Density,g/l ≥ |
780 |
770 |
Qualified Ratio of Spherical Granules,% ≥ |
92 |
90 |
Loss on Heating , % ≥ |
2 |
5 |
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