Used as a silane coupling agent in composite materials, enhancing adhesion between organic polymers and inorganic surfaces such as glass, metals, and minerals. Commonly applied in sealants, adhesives, and coatings to improve durability, moisture resistance, and mechanical strength. Also utilized in the treatment of fillers and reinforcements in rubber and plastic industries to promote better dispersion and bonding. Effective in improving the performance of fiber-reinforced composites and in formulations requiring long-term stability under humid conditions.