IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Methylcyclohexane with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Methylcyclohexane; C7H14; [108-87-2]  NIST Chemistry WebBook for detail
Evaluator:
   M.C. Haulait-Pirson, Department of Chemistry, University of Leuven, Belgium.
G.T. Hefter, School of Mathematical and Physical Sciences, Murdoch University, Perth, W.A., Australia. November 1984.

 Critical Evaluation:
   Quantitative solubility data for the system methylcyclohexane (1) and water (2) have been reported in the publications listed in Table 1.

The original data in these publications are compiled in the Data Sheets immediately following this Critical Evaluation. For convenience, further discussion of this system will be in two parts.


1. THE SOLUBILITY OF METHYLCYCLOHEXANE (1) IN WATER (2)
At 298 K the various solubility values (ref 3, 4, 6) are in good agreement (Table 2). The datum of Krzyzanowska and Szeliga (ref 5) has been excluded from consideration because it does not appear to be independent of that of Price (ref 4).

At other temperatures the values of Guseva and Parnov (ref 1), probably obtained in sealed tubes at unspecified pressures, are almost an order of magnitude larger than those of Price (ref 4) and are thus rejected. All other data are listed in Table 2 and plotted in Figure 1.

Roof (ref 7) has reported critical end point at 572.2 K and 3.47 MPa.


2. THE SOLUBILITY OF WATER (2) IN METHYLCYCLOHEXANE (1)
The solubility of water in methylcyclohexane has been reported only by Englin et al. (ref 2) and so no critical evaluation can be made. The interested user is referred to the relevant Data Sheet for solubility values. However, it should be noted that the data of Englin et al. are generally reliable at lower temperatures but are high when T > 300 K.



Experimental Data:   (Notes on the Nomenclature)
Table 1. Quantitative Solubility Studies of the Methylcyclohexane (1) - Water (2) System
AuthorT/KReferenceSolubilityMethod
Guseva and Parnov341-4881(1) in (2)synthetic?
Englin et al.283-3032(2) in (1)analytical
McAuliffe2983(1) in (2)GLC
Price298-4234(1) in (2)GLC
Krzyzanowska and Szeliga2985(1) in (2)GLC
Rudakov and Lutsyk2986(1) in (2)partition coefficient
Table 2. Recommended (R) and Tentative Values of the Solubility of Methylcyclohexane (1) in Water (2)
T/KReferenceSol. PowerSolubilitySol. NoteBest Sol. PowerBest Solubilityx1 Powerx1
2983, 4, 631.4, 1.60, 1.53 g(1)/100g slna31.51 ± 0.08 (R) g(1)/100g sln62.94 (R)
303431.7* g(1)/100g slna31.7 g(1)/100g sln63.1
313431.8* g(1)/100g slna31.8 g(1)/100g sln63.3
323431.9* g(1)/100g slna31.9 g(1)/100g sln63.5
343432.2* g(1)/100g slna32.2 g(1)/100g sln64.0
353432.9* g(1)/100g slna32.9 g(1)/100g sln65.3
383435.2* g(1)/100g slna35.2 g(1)/100g sln69.6
4034318.8* g(1)/100g slna311 g(1)/100g sln620
4234324.5* g(1)/100g slna325 g(1)/100g sln646
 View Figure 1 for this Evaluation

Notes:
Table 2a  Values marked with an asterisk ( * ) have been obtained by the Evaluators by graphical interpolation of the original data.

 References: (Click a link to see its experimental data associated with the reference)
   1  Guseva, A.N.; Parnov, E.I., Vestn. Mosk. Univ. Khim. 1964, 19, 77-8.
   2  Englin, B.A.; Plate, A.F.; Tugolukov, V.M. Pryanishnikova, M.A., Khim. Tekhnol. Topl. Masel 1965, 10, 42-6.
   3  McAuliffe, C., J. Phys. Chem. 1966, 70, 1267-75.
   4  Price, L.C., Am. Assoc. Petrol. Geol. Bull. 1976, 60, 213-44.
   5  Krzyzanowska, T.; Szeliga, J., Nafta (Katowice) 1978, 12, 413-7.
   6  Rudakov, E.S.; Lutsyk, A.I., Zh. Fiz. Khim. 1979, 53, 1298-1300.
   7  Roof, J.G., J. Chem. Eng. Data 1970, 15, 301-3.