Tribenzyl phosphite is primarily used as a stabilizer and antioxidant in various polymer and plastic formulations. It helps in preventing the degradation of polymers caused by heat, light, and oxidation, thereby extending the lifespan of the material. This chemical is particularly effective in polyolefins, such as polyethylene and polypropylene, where it enhances thermal stability during processing and usage. Additionally, it finds application as a lubricant additive, where it improves the performance and durability of lubricants by reducing friction and wear. In the field of organic synthesis, tribenzyl phosphite serves as a reagent for the preparation of phosphonates and other phosphorus-containing compounds, which are valuable intermediates in the production of pharmaceuticals, agrochemicals, and flame retardants. Its ability to act as a mild reducing agent also makes it useful in certain chemical transformations.