N-Methyldiethanolamine (MDEA) is an organic compound with the molecular formula CH3N(C2H4OH)2. It is a colorless, hygroscopic liquid with a mild ammonia-like odor. The compound is highly soluble in water, alcohol, and benzene. MDEA is primarily used in amine gas treating, a process also known as gas sweetening or acid gas removal. This involves the removal of hydrogen sulfide (H2S) and carbon di..