Precipitated Silica are fine, loose powders that are also available in granule form for specific applications. The particles are amorphous, posing no risk in their application. The chemical composition of rubber silica is approximately 99 percent silicon dioxide (SiO2). Due to the large bandwidth of physico-chemical data precipitated performance silica possess varied properties that facilitate manufacturing processes and increase both the quality and performance of end-products.
The main differences within the product line ULTRASIL® are in specific surface, behaviour to water and particle size.