AEROSIL R 974 is a hydrophobic fumed silica aftertreated with DDS (Dimethyldichlorosilane) based on a hydrophilic fumed silica with a specific surface area of 200 m2/g. AEROSIL R 974 finds wide application in the pharmaceutical industry due to its unique properties. As a reinforcing and thickening agent, AEROSIL R 974 helps improve the shelf life and stability of various pharmaceutical formulations. Its hydrophobic nature and large surface area provides excellent flow and anti-caking properties to pharmaceutical powders. AEROSIL R 974 also aids in improving the rheology and texture of semi-solid and liquid pharmaceutical formulations. Overall, AEROSIL R 974 is an effective excipient and processing aid for a variety of pharmaceutical dosage forms.