... Heptamethyltrisiloxane 1,1,1,3,5,5,5-7-methyl-3 siloxane CAS No.: 1873-88-7 EINECS : 217-496-1 M.F. : C7H22O2Si3 Heptamethyltrisiloxane 1. ... Chemical Name:1,1,1,3,5,5,5-7-methyl-3 siloxane ... pesticide assistant, coating assistant etc. 5. Packing and storage: (1) Packing: 150kgs/drum, plastic or steel drum. Or 800kgs/IBC ...