Dibutyl phosphite is widely used as a stabilizer and antioxidant in the production of polymers and plastics. It helps to prevent degradation caused by heat and oxidation, thereby extending the lifespan of these materials. In the rubber industry, it serves as a key additive to enhance the resistance of rubber products to aging and environmental factors. Additionally, it is employed as an intermediate in the synthesis of various organophosphorus compounds, which are utilized in flame retardants, lubricants, and pesticides. Its role as a chelating agent also makes it valuable in metal treatment processes, where it aids in preventing corrosion and improving the performance of metal surfaces.