What is silica gel powder?

Silica gel powder is a colloidal system with solid properties, consisting of colloidal particles that form an aggregated structure. Colloidal particles are condensates of hydrated silica gel (polysilicic acid) and are amorphous substances. In reagent column chromatography, the voids of the colloidal aggregates form a microporous structure inside the silica particles. Therefore, it is a high-quality adsorbent material with abundant microporous structure, high specific surface area, high purity and high activity. Silica gel powder is processed from silica gel as raw material. Its main feature is that it can absorb and retain different components in the mixture through the difference of retention time; to achieve the purpose of separation and purification.

Silica gel powder is white uniform particles, the main component is silica. It is characterised by high purity, safety and hygiene.

Silica gel powder is a colloidal system with solid properties, consisting of colloidal particles in an aggregated structure. Colloidal particles are condensates of hydrated silica gel (polysilicic acid), which are amorphous substances. In reagent column chromatography, the voids of the colloidal aggregates form a microporous structure inside the silica particles. Therefore, it is a high-quality adsorbent material with abundant microporous structure, high specific surface area, high purity and high activity.

The main performance characteristics of reagent silica gel powder - adsorption characteristics depend on the microporous structure and internal pore surface formed during the production of raw silica gel.

What is the use of silica gel powder?

Silica gel powder has good thermal and chemical stability and is capable of selectively adsorbing and purifying heterogeneous components from multi-component solutions. In the process of preparing silica gel powder, by controlling different process conditions, a series of products with an average pore size of 20-20,000 A can be produced to adapt to the separation and purification of substances with different properties, molecular weights and molecular structures. The purity of silica powder is above 99%. Compared with organic column packing, silica gel is a solid colloid based on silica with a dense structure. Even if it is discarded directly, it will lose organic matter and contaminate the target product.

Silica gel powder is used for the separation and purification of the active ingredients of Chinese herbal medicine. Preparation of high purity substances. Refining of petroleum products Dehydration and refining of organic substances.

Silica gel powder filtration oil before and after comparison