Used as a flotation agent in mineral processing, particularly for the separation of fine-grained minerals like phosphate and potash. Its long hydrophobic chains enhance the attachment of air bubbles to mineral surfaces, improving recovery efficiency. Also employed as a corrosion inhibitor in industrial lubricants and metalworking fluids due to its ability to form protective films on metal surfaces. Additionally, serves as an intermediate in the synthesis of quaternary ammonium compounds used in biocides and fabric softeners. Its surfactant properties make it useful in emulsion stabilization and phase transfer applications.