Silica gel is a granular, vitreous, porous form of silicon dioxide made synthetically from sodium silicate. Silica gel contains a nano-porous silica microstructure suspended inside a liquid. Most applications of silica gel require it to be dried, in which case it is called silica xerogel. highest absorption capacity with controlled environment manufacturing and gives you double the lead time for your product to reach the final customer and keeps your product as dry and free-flowing as it was at the time of Packaging.