Column chromatography silica gel is a white powder, primarily composed of SiO2·nH2O, insoluble in water, inorganic acids, and other organic solvents. It absorbs moisture in the air. Due to its differential adsorption retention times for various substances, it enables the separation and purification of different materials.

This product is mainly used for refining petroleum products to remove aromatic hydrocarbons, selective adsorption and separation of organic gases and liquids; serving as a catalyst carrier and chromatographic support; it can also be employed for the separation and purification of active ingredients in Chinese herbal medicine and the preparation of high-purity substances.