AEROSIL R 816 Surface modified fumed silica 199 876-45-4 Degussa-Silanes Corrosion inhibitor Rheology Modifier/ Thickener Coatings >> Waterborne AEROSIL® R 816 is a fumed silica aftertreated with a hexadecylsilane based on AEROSIL® 200. It possesses an effective rheology control in complex liquid systems, can be applied in coatings systems as an anti-settling agent for the stabilization of pigments and to enhance the effect of corrosion protection. It is used in water-based coatings systems. Surface modified fumed silica. Used in water-based coatings systems. Provides stabilization of pigments and enhance the effect of corrosion protection. Possesses an effective rheology control in complex liquid systems.