Tris(2-ethylhexyl)amine is widely used as a solvent extractant in the separation and purification of metals, particularly in hydrometallurgical processes. It is effective in extracting metals like uranium, vanadium, and rare earth elements from aqueous solutions, making it valuable in the mining and nuclear industries. Additionally, it serves as a phase transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases. Its ability to stabilize emulsions also makes it useful in the formulation of lubricants and coatings. Furthermore, it is employed in the production of corrosion inhibitors and as an additive in fuel to enhance performance and reduce deposits.