Isobutyltrimethoxysilane CAS No:18395-30-7 C7H18O3Si

Main Applications

1.‌Polypropylene Catalyst Additive‌: Acts as an external electron donor in Ziegler-Natta catalyst systems to enhance catalyst activity, stereoregularity, and the isotacticity of polypropylene.

2.‌Coupling Agent/Surface Treatment Agent‌: Bonds inorganic materials (glass, silica) via trimethoxysilyl groups; the isobutyl group improves compatibility with organic phases such as polyolefins and epoxy resins, enhancing the mechanical properties, water resistance, and electrical insulation of composite materials.

3.‌Functional Modification Applications‌: Used for hydrophobic/biocompatibility modification of biomedical material surfaces, as a pesticide adjuvant (to enhance adhesion and penetration), and as an organic synthesis intermediate. ‌‌

Storage and Precautions

1.‌Environmental Requirements‌: Store at room temperature in a sealed container away from light; maintain a well-ventilated, dry environment. Optimal conditions involve nitrogen purging; recommended storage temperature is 2–8°C (refrigerated) or strictly controlled below 30°C.

2.‌Conditions to Avoid‌: Strictly avoid contact with moisture or humid air (prone to hydrolysis), oxidizing agents, and acidic substances; keep away from heat sources, sparks, and open flames.