Used primarily as a gas sweetening agent to remove acidic components like hydrogen sulfide (H₂S) and carbon dioxide (CO₂) from natural gas and refinery streams. Its selective absorption properties make it ideal for treating gas streams where only H₂S removal is required, preserving CO₂ for downstream processes. Commonly applied in natural gas processing, petroleum refineries, and petrochemical plants. Also serves as a precursor in the production of surfactants, corrosion inhibitors, and emulsifiers. Due to its tertiary amine structure, it exhibits lower heat consumption during regeneration, improving energy efficiency in amine units. Used in some water-based formulations for its buffering and solvency characteristics.