Product Description Octadecyl-trimethoxysilane, tech. Other Details Molecular Formula: C21H46O3Si Molecular Weight: 374.67 CAS Number: 3069-42-9 Minimum Purity: 97% (GC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 5g Leadtime:20 Days Sizes 2: 10g Leadtime:20 Days Sizes 3: 25g Leadtime:20 Days