1,1,3,5,5-Pentamethyl-1,3,5-trivinyltrisiloxane 1529-65-3 EINECS 216-220-7 Trisiloxane, 1,1,3,5,5-pentamethyl-1,3,5-trivinyl- Trisiloxane, 1,3,5-triethenyl-1,1,3,5,5-pentamethyl-