Dicyclopentyl(dimethoxy)silane is primarily used as an internal electron donor in Ziegler-Natta catalyst systems for the stereospecific polymerization of propylene, facilitating the production of isotactic polypropylene with enhanced tacticity, yield, and mechanical properties. This application is crucial in the plastics industry for manufacturing high-performance polymers used in packaging, automotive parts, and consumer goods. In organic synthesis, it acts as a silylating agent to protect alcohols by forming removable silyl ether protecting groups during multi-step reactions. Additionally, due to its organosilicon structure, it finds use in specialty coatings and surface treatments to provide water repellency, corrosion resistance, and improved adhesion in electronics and construction materials.