... Siloxane SeriesChemical Name: D4, OctamethylcyclotetrasiloxaneSynonym: Cyclic dimethylsiloxane tetramer; 2,2,4,4,6,6,8,8-Octamethyl-1,3,5 ... liquid2. Applications:D4, Octamethylcyclotetrasiloxane, CAS No.: 556-67-2 is a base fluid in a number of personal care ... properties and unique volatility characteristics.Can be used in antiperspirants, bath oils, deodorants, skin creams, lotions, suntan and shaving ...