The system nitromethane + 1,2-ethanediol + 1-dodecanol includes a three-phase region. All three binary pairs of components, nitromethane + 1,2-ethanediol, nitromethane + 1-dodecanol and 1,2-ethanediol + 1-dodeca-nol are partially miscible, Fig. 21 . The data for the binary systems (1) + (2) and (1) + (3) were compiled and critically evaluated in Sazonov et al.⁵ Recommended data for the system 1,2-ethanediol + 1-dodecanol are not yet available. The values of UCST (upper critical solution temperature) of the binary systems are reported in Francis,¹ Zhuravleva et al.,³ and Sazonov et al.,⁴ and presented in Table 2.
     Solubility data were obtained by the synthetic method for the ternary system (Francis,¹ Zhuravleva et al.,³ and Sazonov et al.⁴) and by titration method (Markuzin and Nikanorova²). Maximal temperature of three-phase liquid equilibrium is reported to occur at 301.7 K (Francis¹), 302.32 K (Sazonov et al.⁴) and 304 K (Zhuravleva et al.³). Thus, the tentative value is: T_c = (302.7 ± 1) K. Experimental errors are specified only in Markuzin and Nikanorova.²

     Compositions of coexisting two and three liquid phase regions of the ternary system nitromethane + 1,2-ethanediol + 1-dodecanol were reported in two references. Composition of each phase at 301.2 K, Markuzin and Nikanorova,² was calculated from the index of refraction-composition curve of saturated mixtures prepared at the time of the saturation curve measurements. Compositions of three liquid phases in equilibrium were measured at 289.2 K, 295.2 K and 301.2 K (Francis¹). At 301.2 K the compositions of the glycol-rich and alcohol-rich phases (Francis¹ and Markuzin and Nikanorova²) agree well, while compositions of the nitromethane-rich phase differ appreciably. Experimental errors were not reported in the papers.
     All experimental data are considered tentative.

Experimental Data:   (Notes on the Nomenclature)