AEROSIL 300 Hydrophilic fumed silica 7631-86-9 Degussa-Silanes Rheology Modifier/ Thickener Coatings Inks AEROSIL® 300 is a hydrophilic fumed silica with a specific surface area of 300 m²/g. It possesses rheology and thixotropy control of liquids, binders, polymers, etc, optimal dispersion yields best results in pronounced thickening and thixotropy, reinforcement of HTV- and liquid silicone rubber (LSR) at a high transparency level, excellent transparency in unsaturated polyester resins. It is used in paints and coatings, HTV-and liquid silicone rubber, cable compounds and unsaturated polyester resins, adhesives and sealants, printing inks. Hydrophilic fumed silica. Used in paints, coatings and printing inks. Offers optimal dispersion yields best results in pronounced thickening and thixotropy. Provides excellent transparency in unsaturated polyester resins. Possesses rheology and thixotropy control of liquids, binders, polymers, etc.