Silica gel is a granular, vitreous, porous form of silicon dioxide made synthetically from sodium silicate. Silica gel contains a nano-porous silica micro-structure,
S 1375 (OTTO) Silica gel 5-8 mesh Blue (self indicating) (coarse) Cas 112926-00-8 - used as catalyst carriers, adsorbents, separators and variable-pressure adsorbent.