Nitromethane with Tetrachloroethene (IUPAC SDS Volume 71)
Evaluators
Adam Skrzecz Institute of Physical Chemistry, Polish Academy of Sciences
Valerii P. Sazonov Department of Physics, Technical University
Evaluation
Solubilities in the system comprising nitromethane and tetrachloroethene have been reported in three publications. Cornish et al.1 determined the upper critical solution temperature by synthetic method. Schuberth and Kranke2 carried out measurements of the mutual solubilities of the components at 293, 303 and 313 K by the synthetic and the titration methods. Sazonov and Chernysheva3 studied mutual solubility of (1) and (2) between 293 and 315 K by the synthetic method.

Values obtained by the graphical interpolation or extrapolation from the data sheets are presented in the table. Data are "recommended" if two or more apparently reliable studies are in reasonable (±5% relative) agreement. All other data are regarded as tentative only.

The upper critical solution temperature has been reported as 314.2 K,1 314.35 K,3 and 314.5 K2. The three reported values of UCST vary over a range of 0.3 K. Thus, the recommended value are: (314.35 ±0.15) K.

The numerical values reported in the above table 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 = 0.89768, a2 = -0.11082, b1 = 8.71962, b2 = -7.01496

(mean standard error of estimate was 0.0062).

For approximation xc1 = 0.538 and recommended value of UCST have been used. This relationship is presented in Fig. 21 together with experimental data reported in Schuberth and Kranke2 and Sazonov and Chernysheva.3

Figure
Solubility graph
Sources:

1 Comish, R. E.; Archibald, R. C.; Murphy, E. A.; Evans, H. M.; Ind. Eng. Chem. 26, 397-406 (1934).
2 Schuberth, H.; Kranke, P.; Z. Phys. Chem. 245O, 49-67 (1970).
3 Sazonov, V. P.; Chernysheva, M. F.; Zh. Obshch. Khim. 55, 2440-6 (1985).