... ,3,5,5,5-7-methyl-3 siloxane, HMTS2. Molecular formula : C7H22O2Si3 Molecular weight: 222.51 CAS No.: 1873-88-7 EINECS : 217-496-13, Product ... can be widely used in pesticide assistant, coating assistant etc. 5. Packing and storage: (1) Packing: 150kgs/drum, plastic or steel ... product must be sealed and kept in cool & ventilated place. 7-methy-3-siloxane