Perfluorodecyltrichlorosilane, also known as FDTS, is a colorless liquid chemical with molecular formula C10H4Cl3F17Si. FDTS molecules form self-assembled monolayers. They form covalent silicon–oxygen bonds to free hydroxyl (–OH) groups, such as the surfaces of glass, ceramics, or silica. Reduced surface energy is helpful for reduction of ejection force and demolding of polymer parts in an injection molding and FDTS coating was applied onto some metallic injection molding molds and inserts.