Pyrogenic Silica/White Carbon Black/Silicon Dioxide 

                                     Pyrogenic Silica / White Carbon Black /  Silicon Dioxide Molecular formula: SiO2 CAS No.: 7631-86-9 Fumed SiO2 (CAS number 7631-86-9), also known as pyrogenic silica because it is produced in a flame, consists of microscopic droplets of amorphous silica fused into branched, chainlike, three-dimensional secondary particles which then agglomerate into tertiary particles.     Fumed SiO2 can be divided into hydrophilic type and hydrophobic type in accordance with their different surface treatments. Positive Properties:                                     …