Fumed Silica consists of microscopic droplets of amorphous silica fused into branched, chainlike, three-dimensional secondary particles, which then agglomerate into tertiary particles. It is also known as pyrogenic Silica since it is produced in flame. The resulting powder so formed has an extremely low bulk density and high surface area. Its three-dimensional structure confer the material some important properties such as increased viscosity, thixotropic behavior when used as a thickener or reinforcing filler. Due to the unique particle characteristics exhibited by such type of silica, it is used in variety of applications such as paints, adhesives, coatings, plastics, sealants, inks, toner, cosmetics, food additives, and deformers, among others.