D4, Octamethyl cyclotetrasiloxane 1. CAS No.: 556-67-2 2. Purity: >99% 3. Similar with Dow Corning PMX-0244 Wanda Siloxane SeriesChemical Name: D4, Octamethyl ... cyclotetrasiloxaneSynonym: Cyclic dimethylsiloxane tetramer; 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7 ... 1000L IBC drum.Stored in shady, cool and ventilated place. D4, Octamethyl cyclotetrasiloxane