D4, Octamethylcyclotetrasiloxane 1. CAS No.: 556-67-2 2. Purity: >99% 3. A volatile octamethylcyclotetrasiloxane fluid Wanda Siloxane SeriesChemical Name: D4, OctamethylcyclotetrasiloxaneSynonym: ... ,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasiloxane1. Properties:Chemical Name: Octamethylcyclotetrasiloxane(D4) CAS No.:556-67-2EINECS No.:209-136 ...