D4, Octamethylcyclotetrasiloxane 1. CAS No.: 556-67-2 2. Purity: >99% 3. A volatile octamethylcyclotetrasiloxane fluid Wanda ... , OctamethylcyclotetrasiloxaneSynonym: Cyclic dimethylsiloxane tetramer; 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasiloxane1. Properties ... oily liquid2. Applications:D4, Octamethylcyclotetrasiloxane, CAS No.: 556-67-2 is a base fluid in a number of personal care ...