A survey of solubilities (soly) and liquid-liquid equilibrium data (equil.) for the system nitromethane + 1,2-ethanediol + 1-dodecanol is given in Table 1.
Solubility data
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: Tc = (302.7 ± 1) K. Experimental errors are specified only in Markuzin and Nikanorova.2
Liquid-liquid equilibrium data
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.