Solubilities in the system comprising nitromethane and 1-hexanol have been reported in three publications. Sazonov and Filippov1 and Zhuravleva et al.2,3 determined the mutual solubility of the components between 293 and 309 K and between 282 and 309 K respectively using the synthetic method. Values obtained by the graphical interpolation or extrapolation from the data sheets are presented in Table 1. 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 308.2 K,3 308.7 K,1 and 308.8 K.2 The averaged value, 308.5 ± 0.3 K, is recommended. The corresponding critical solution composition has been reported as xc1 = 0.6492, 3 and xc1 = 0.67403. The average, xc1 = (0.657 ± 0.010), is also recommended.
The recommended and tentative values for the mutual solubility 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 = 0.92115, a2 = -0.09561, b1 = 3.17304, b2 = -3.32141(mean standard error of estimate was 0.0158).
For an approximation, recommended values of UCST and xc1 have been used. This relationship is presented in Fig. 25 together with experimental data reported in Refs. 1, 2 and 3.