NNNtrimethylethanolamine

NNNtrimethylethanolamine, also known as N,N,N-trimethylethanolamine or TMEA, is a quaternary ammonium compound with the chemical formula (CH3)3NCH2CH2OH. It is a colorless liquid at room temperature and is soluble in water and many organic solvents. TMEA is a derivative of ethanolamine, where all three hydrogen atoms on the nitrogen atom have been replaced by methyl groups, and it also possesses a hydroxyl group.

This compound finds applications as a catalyst in the production of polyurethane foams, where it promotes the reaction between isocyanates and polyols. It is also used as an intermediate in the synthesis of other chemicals, including pharmaceuticals and surfactants. In some formulations, TMEA can act as a pH adjuster or buffering agent due to its basic nature. Its ability to form salts with acids contributes to its utility in various chemical processes. Due to its chemical structure, it can also function as a chelating agent for certain metal ions. Safety precautions should be observed when handling TMEA, as it can be an irritant to skin and eyes.