Tri-n-octyl borate is primarily used as a stabilizer and additive in various industrial applications. It is commonly employed in the production of lubricants, where it enhances thermal stability and reduces friction. Additionally, it serves as a catalyst or co-catalyst in organic synthesis, particularly in polymerization reactions, where it helps control the molecular structure of the final product. In the field of coatings and adhesives, it improves durability and resistance to environmental factors. Its properties also make it suitable for use in high-temperature applications, such as in the formulation of specialty greases and oils.