... %) Bis-[3-(triethoxysilyl)-propyl]-tetrasulfideSilane Coupling Agent Si-69C ( solid grade ) 1. Chemical Name : The blend of Bis-[γ-(triethoxysilyl)-propyl]-tetrasulfide(50 ... ,IP,SBR,BR,NBR,EPDM, etc.4. Packing and storage :(1) Packing: PE bag, net weight: 25kgs a bag or carton ...