Bates Roger G, Allen Guy F
J Res Natl Bur Stand A Phys Chem. 1960 Jul-Aug;64A(4):343-346. doi: 10.6028/jres.064A.033. Epub 1960 Aug 1.
Earlier studies of the dissociation constants of monoethanolammonium and diethanolammonium ions and the thermodynamic constants for the dissociation processes have been supplemented by a similar study of triethanolammonium ion from 0° to 50° C. The dissociation constant ( ) is given by the formula where is in degrees Kelvin. The order of acidic strengths of the ions is as follows: Triethanolammonium >diethanolammonium>monethanolammonium. Conversely, monoethanolamine is the strongest of the three bases. The thermodynamic constants for the dissociation of one mole of triethanolammonium ion in the standard state at 25° C are as follows: Heat content change (Δ°) 33.450 joule mole; entropy change (Δ°), -36.4 joule deg mole; heat-capacity change , 52 joule deg mole.
早期对单乙醇铵离子和二乙醇铵离子的离解常数以及离解过程的热力学常数的研究，已通过对三乙醇铵离子在0℃至50℃范围内进行的类似研究得到补充。离解常数（ ）由公式 给出，其中 为开尔文温度。离子的酸性强度顺序如下：三乙醇铵＞二乙醇铵＞单乙醇铵。相反，单乙醇胺是这三种碱中最强的。在25℃标准状态下，一摩尔三乙醇铵离子离解的热力学常数如下：热含量变化（Δ°）33.450焦耳/摩尔；熵变化（Δ°），-36.4焦耳/开尔文·摩尔；热容变化 ，52焦耳/开尔文·摩尔。
