Silica gel is a highly active adsorption material, which is usually made from the reaction of sodium silicate with sulfuric acid after a series of post-treatment processes. Silica gel belongs to amorphous substance. Its main component is silicon dioxide, content is more than 98%, insoluble in water and any solvent, non-toxic, odorless, stable chemical properties.
White Silica Gel
Average pore diameter: 2.0-3.0nm
Specific surface area: 650-800m2/g
Pore volume: 0.35-0.45ml/g
Specific heat: 0.92KJ/kg.ºC
Thermal conductivity: 0.63KJ/m. Hr.ºC
Application:
Mainly used for drying and moisture proof, may also be used as catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc.
Technical Data:
| Item | Specifications | ||
| Spherical | Lumpy | ||
| Adsorption capacity/ @ T:25ºC, 48h | RH=20%, %≥ | 8 | 8 |
| RH=50%, %≥ | 22 | 22 | |
| RH=90%, %≥ | 32 | 32 | |
| SiO2 | %, ≥ | 98 | 98 |
| Pore diameter/ | Å | 20-30 | 20-30 |
| Bulk density/ | g/l, ≥ | 720 | 670 |
| Loss on heating/ | %, ≤ | 2.0/5.0 | 2.0/5.0 |
| Qualified size ratio/ | %, ≥ | 98 | 95 |
| Size/ | mm | 0.5-1.5/1-3/2-4/3-5/2-5/4-8mm | 0.3-1/0.5-1.5/0.5-2/1-3/2-5/4-8mm |
| Packing/ | 25kg/bag, 25kg/drum, 150kg/drum, 800kg/jumbo bag | ||
Remark: Special demands can be negotiable.
