Definition and Area of Use :
Aerosil-200 is a hydrophilic fumed silica with a specific surface of 200 m2/g. Silica dioxide (SiO 2 ), also known as silica, is a natural compound produced from the two richest substances in the world. Mostly known as quartz, silicon dioxide is found naturally in water, plants, animals and the earth. The earth's crust is 59 percent silica and more than 95 percent of the known rocks on the planet. When you sit on a beach, it is silicon dioxide in the form of sand that gets between your toes.