Thickener or Thixotropic Filler (FumedSilica)
The chemical formula is SiO2. The specific weight is very volatile because it is very light. This material, which has an amorphous structure, is a hydrophilic smoky crystalline fine powder of silicon dioxide, having a specific surface of 200 m2/g. It is used as a thixotropicizer and thickening agent in the polyester resin industry. It prevents the resin from flowing on vertical surfaces in its proper use.