Quantitative solubility data for the system acetonitrile (1) and cyclohexane (2) have been reported in the publications listed in Table 1.
In addition to these data Ott et al.7 reported extensive measurements of the mutual solubility of components (1) and (2) determined between 0.4 and 15 MPa. The work of Poppe1 defines the influence of pressure on upper critical solution temperature between 0.5 and 12.4 MPa. All original data are compiled in the data sheets immediately following this Critical Evaluation.
The upper critical solution temperature of this system has been reported as 347.84 K7, 349.2 K8, 349.70 K1 and 349.789 K.5 These data are in reasonable agreement and thus their average value: UCST = 349.1 ± 0.8 K is recommended. The corresponding critical solution composition was reported to be xcl = 0.52695.
All experimental values reported2-7 have been approximated by an equation based on the scaling law (described in the introduction to this volume) for which the following parameters have been derived:
a1 = 1.0175, a2= -0.5082, b1 = 2.0121, b2 = -1.8689
(mean standard error of estimate was 0.0052).
For approximation xcl and UCST from Vani et al.5 have been used. In the opinion of the evaluator, the mutual solubilities calculated by this equation may be treated as tentative. The results of calculations for the selected temperatures are presented in Table 2. This relationship together with experimental points reported2-7 are also presented in Fig. 7.
Quantitative solubility data for the system acetonitrile (1) and cyclohexane (2) have been reported in the publications listed in Table 1.
In addition to these data Ott et al.7 reported extensive measurements of the mutual solubility of components (1) and (2) determined between 0.4 and 15 MPa. The work of Poppe1 defines the influence of pressure on upper critical solution temperature between 0.5 and 12.4 MPa. All original data are compiled in the data sheets immediately following this Critical Evaluation.
The upper critical solution temperature of this system has been reported as 347.84 K7, 349.2 K8, 349.70 K1 and 349.789 K.5 These data are in reasonable agreement and thus their average value: UCST = 349.1 ± 0.8 K is recommended. The corresponding critical solution composition was reported to be xcl = 0.52695.
All experimental values reported2-7 have been approximated by an equation based on the scaling law (described in the introduction to this volume) for which the following parameters have been derived:
a1 = 1.0175, a2= -0.5082, b1 = 2.0121, b2 = -1.8689
(mean standard error of estimate was 0.0052).
For approximation xcl and UCST from Vani et al.5 have been used. In the opinion of the evaluator, the mutual solubilities calculated by this equation may be treated as tentative. The results of calculations for the selected temperatures are presented in Table 2. This relationship together with experimental points reported2-7 are also presented in Fig. 7.