Silica gel
Silica gel is a kind of granular porous silica hydrate, which is obtained by washing and drying from sodium silicate and acid, mainly used as desiccant as well as adsorbent in column chromatography and thin layer chromatography. Although the name is "glue", it is actually a solid, the appearance was transparent or milky white. Silicone is also sometimes referred to as silica gel, but is actually a silicon-containing compound of a completely different nature and use. ...