... A volatile octamethylcyclotetrasiloxane fluid Wanda Siloxane SeriesChemical Name: D4, OctamethylcyclotetrasiloxaneSynonym: Cyclic dimethylsiloxane tetramer; 2,2,4,4 ... 6,8-tetraoxatetrasiloxane1. Properties:Chemical Name: Octamethylcyclotetrasiloxane(D4) CAS No.:556-67-2EINECS No.:209-136 ... and Appearance:Colorless clear oily liquid2. Applications:D4, Octamethylcyclotetrasiloxane, CAS No.: 556-67-2 is ...