Top 5 Industrial Applications of Fumed Silica
Fumed Silica, also known as Pyrogenic Silica, consists of microscopic droplets of amorphous silica fused into branched, chainlike, three-dimensional secondary particles. The powder has very low bulk density and large surface area. It is highly versatile and is used in a variety of applications including: 1. Defoamers & Antifoams Defoamers & Antifoams usually contain a suspension of hydro-phobic or hydrophilic precipitated silica in mineral oil, soy-bean oil or in silicone oil. However, precipitated silica has a tendency to settle, which can lead to other issues. Adding fumed silica either completely prevents or significantly reduces this effect. In many defoamers, fumed silica is used as the active silica component instead of precipitated silica. 2. Adsorbent Due to its high specific surface area, fumed silica is able to adsorb gaseous, liquid or solid materials. The substance will preferably adsorb those materials, which are capable of forming hydrogen bond li...