Trioctylamine is widely used as a solvent and extractant in the separation and purification of metals, particularly in hydrometallurgical processes. It plays a crucial role in the extraction of rare earth elements, uranium, and other valuable metals from ores and industrial waste. Additionally, it is employed in the production of pharmaceuticals and agrochemicals as an intermediate or catalyst. In the chemical industry, it is utilized for the synthesis of surfactants and corrosion inhibitors. Its ability to form stable complexes with various metal ions makes it valuable in analytical chemistry for metal ion detection and separation.