Trichloro(propyl)silane is widely used as a coupling agent in the production of silicone-based materials. It plays a crucial role in surface modification, where it helps improve adhesion between organic polymers and inorganic surfaces, making it valuable in coatings, adhesives, and sealants. In the manufacturing of composites, it enhances the bonding of fibers, such as glass or carbon, to resin matrices, resulting in stronger and more durable materials. Additionally, it is employed in the synthesis of organosilicon compounds, which are essential in various industrial applications, including water repellents and release agents. Its reactivity with moisture also makes it useful in creating protective layers on metals and ceramics to prevent corrosion or degradation.