The coarse pore microsphere silica gel is a milky white particle, the main component is SiO2·nH2O, insoluble in water and inorganic acid, soluble in hydrofluoric acid and concentrated caustic soda solution. The pore volume is 0.80-1.30ml/g, pore size 80-120Å, specific surface area 300-550㎡/g.

The product is mainly used as catalyst and catalyst carrier for important petrochemical products such as phthalic anhydride, aniline, maleic anhydride, cyanamide, acrylonitrile, etc. It is also widely used for refining petroleum products, selective adsorption and separation of some organic gases and liquid components. It can also be used as an ion exchanger to remove polyvalent harmful elements from water, as well as for dry storage of materials, instruments and other items and dewatering purification of high purity gas.