triethanolamine

noun

tri·​eth·​a·​nol·​amine (ˈ)trī-ˌeth-ə-ˈnäl-ə-ˌmēn  -ˈnōl- 

: a soluble hygroscopic basic amino alcohol C₆H₁₅NO₃ that is used as a reducing agent, a corrosion inhibitor in aqueous solution, and in making fatty acid soaps