IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Cyclohexane with Water
Components:
   (1) Cyclohexane; C6H12; [110-82-7]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
Original Measurements:
   Tsonopoulos, C.; Wilson, G.M., A. I. Ch. E. J. 1983, 29, 990-9.

 Variables:
   Temperature = 313-482 K
   Pressure = 0.03-3.0 MPa

 Prepared By:
   G.T. Hefter

 Experimental Remarks:
   The three phase critical point was reported to be 529.4 K, 8.025 Mpa and x1 = 1.748 x 10-3 (0.82 g(1)/100 g sln, compiler).


The authors also report equations fitted to their own and litrature data over the range 273-529 K, viz.


ln x1 = -209.11689 + 8325.49/T + 29.8231 ln T

ln x2 = -62.7645 - 654.027/T + 9.99967 ln T

 Experimental Data:   (Notes on the Nomenclature)
  
The solubility of cyclohexane in water
T/KPressure [MPa]102 * g1/100 g solution (compiler)104 * Mole Fraction x1
313.150.031510.7280.156 (b)
373.150.27231.770.379 (b)
422.04(a)4.811.03
423.151.00326.071.30
473.152.96518.33.92
482.21(a)23.04.93
The solubility of water in cyclohexane
T/KPressure [MPa]g2/100 g solution (compiler)103 * Mole Fraction x2
313.150.031510.021 (a)0.887, 0.924, 1.13
373.150.27230.10 (a)4.35, 5.12
423.151.00820.47 (a)20.4, 24.0
473.152.9651.8179.3
 Notes:
   Table 1  a  Not specified.
   Table 1  b  Other data presented but rejected by the authors.
   Table 2  a  Average value.

 Method/Apparatus/Procedure:
   All experimental details are given in an Appendix deposited in a Documentation Centre rather than in the original paper. The solubility of (1) in (2) was measured by gas chromatography, whilst that of (2) in (1) was measured by Karl Fischer titration.

 Source and Purity of Materials:
   (1) no details given.
   (2) no details given.

 Estimated Errors:
   Solubility: ± 5% relative; repeatability of replicate analyses.
   Temperature: not stated.
   Pressure: ± 1%; type of error not stated.