Solubilities in the system comprising nitromethane and 1-undecanol have been reported in three publications. Schmid, et al.1 determined the upper critical solution temperature by the synthetic method and the data have been reported in the table titled "Nitromethane-1-Alcohols". Zhuravleva and Mukhametshin2 carrier out measurements of the mutual solubilities of (1) and (2) between 292 and 336 K also by the synthetic method and these data were presented in graphical form only. Zhuravleva3 studied the mutual solubility of (1) and (2) at 293.2, 303.2, 313.2, and 318.2 K by the synthetic method. These data were presented in graphical form only and are not presented as a compilation table. Monotectic equilibrium is realized at 250.0 K2,3.
From the relationship of UCST in the nitromethane - alcohol series, discussed at the beginning of this volume, the calculated UCST value for this system is 337.2 K. The experimental UCST = 336.2 K measured by Zhuravleva et al.2,3 does not differ very much and is treated as tentative, while the result of Schmid, et al.,1 reported as 334.7 K, have to be rejected. The value of critical solution composition, calculated from similar relationship of the nitromethane - alcohol series, is 0.779, while the experimentally measured value is 0.784.2 Only experimental data reported in Zhuravleva and Mukhametshin2 could have been approximated by the equation based on scaling law (described in the Introduction material to this volume "Relations of Solubility Data in Binary Systems Containing Nitromethane") and the following parameters have been adjusted:a1 = 0.77261, a2= 0.23305, b1 = 8.38837, b2 = -7.95568(mean standard error of estimate was 0.0242).
For approximation xc1 and UCST from Zhuravleva and Mukhametshin2 have been used. In the opinion of the evaluators, the mutual solubilities calculated by this equation may be treated as tentative.The results of calculations for the selected temperatures are presented in Table 1. This relationship together with experimental points reported in Zhuravleva and Mukhametshin2 are also presented in Fig. 30 .