Used primarily as a corrosion inhibitor in industrial water treatment systems, especially in boiler and cooling water applications. It helps protect metal surfaces by forming a protective film that prevents oxidative degradation. Also functions as an emulsifier and stabilizer in some oilfield chemicals and metalworking fluids. Its long hydrophobic chain enhances surface activity, making it effective in controlling corrosion in multiphase environments. Commonly found in formulations for oil and gas production, where it mitigates acid-induced corrosion in pipelines and equipment.