... -methyl-3-siloxane CAS No.: 1873-88-7 EINECS : 217-496-1 M.F. : C7H22O2Si3 Heptamethyltrisiloxane 7-methy-3-siloxane 1. Chemical Name:1,1,1,3, ... 5,5,5-7-methyl-3 siloxane, HMTS2. ... pesticide assistant, coating assistant etc. 5. Packing and storage: (1) Packing: 150kgs/drum, plastic or steel drum. Or 800kgs ...