Silica powder is white uniform particles, the main component is silicon dioxide. It has the characteristics of high purity, safety and hygiene.
It is a colloidal system with solid properties, composed of colloidal particles forming agglutinate structure. Colloidal particles are condensates of hydrated silica gel (polysilicic acid). The interstitial Spaces of the colloidal particles form the micropore structure inside the reagent column chromatography silica gel particles. Therefore, it is a high quality adsorption material with abundant microporous structure, high specific surface area, high purity and high activity.
The main performance characteristic of reagents silica gel powder -- adsorption characteristic depends on the micropore structure and inner pore surface formed in the production process of raw material silica gel.
The silica gel powder is made of high-quality silica gel with high transparency, which has excellent adsorption performance and ideal separation function for isomers with similar properties and structures. In the process of raw material production, the acid bubble and aging time are strictly controlled, and the high-temperature calcining technology is adopted, so the silica gel powder has a rigid skeleton structure, high mechanical strength, and can withstand the pressure within 30MPa. Silica gel powder has good thermal stability and chemical stability, selectively adsorbed and purified isomer components from multi-component solutions. During the preparation of silica gel powder, a series of products with average pore size of 20A°-20000A° can be produced by controlling different technological conditions to adapt to the separation and purification of substances with different properties, molecular weight and molecular structure. Silica gel powder purity of more than 99%, compared with organic column packing, silica gel is a solid with SiO2 as the matrix of colloids, dense structure, even if the direct rejection of organic matter loss and pollution of the target products.