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
|(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|
|Specific Resistance , Ω.cm ≥||3500||3200|
|Bulk Density,g/l ≥||780||770|
|Qualified Ratio of Spherical Granules,% ≥||92||90|
|Loss on Heating , % ≥||2||5|