For column chromatography silica gel, its appearance is amorphous white powder, with even abundant micro porous structure inside that can adsorb the moisture from the air. This product has the time difference in adsorption and retain of different substances and so it can make various substances to reach the purpose of separation and purification. This product is mainly used for selective adsorption and separation of organic gas and liquid, used for removal of aromatic hydrocarbon in refining petroleum articles, used for separation and purification of effective ingredients of herb and preparation of high-purified substances, used as catalyst and carrier, etc. its key technological specifications as follows:
Item |
specifications |
Type B column chromatography |
Type C column chromatography |
Industrial grade |
Reagent grade |
Industrial grade |
Reagent grade |
Pore diameter Å |
50-80 |
50-80 |
80-100 |
80-100 |
Pore volume ml/g |
0.5-0.8 |
0.5-0.8 |
0.8-1.1 |
0.8-1.1 |
Specific surface area m2/g≥ |
450-650 |
450-650 |
300-450 |
300-450 |
Loss on heating % ≤ |
5 |
5 |
5 |
5 |
Chloride(Cl-)% ≤ |
----- |
0.02 |
--- |
0.02 |
Iron(Fe3+)% ≤ |
------ |
0.02 |
---- |
0.02 |
Particle size（mesh） |
30-100、40-120、100-200, etc. |
packing |
20kg/bag 15kg/bag, etc. |
Note：Made as per the agreement if any special request |
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