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
Original Measurements:
   Krzyzanowska, T.; Szeliga, J., Nafta (Katowice) 1978, 12, 413-7.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   M.C. Haulait-Pirson

 Experimental Remarks:
   The solubility of methylcyclohexane in water at 25°C was reported to be 16.0 mg(1)/kg(2).
The corresponding mass percent and mole fraction, x1, calculated by compiler are 0.0016 g(1)/100 g sln and 2.93 x 10-6.


Editor's Note: Based on the reults for this and other hydrocarbon-water systems, uncertainty exists about whether the datum compiled here is independent of that of Price for the same system (see previous page).

Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   Saturated solutions of (1) in (2) were prepared in two ways. First, 200 microliters of (1) was injected into 20 mL of (2) and thermostatted at 25°C. Second, the mixture of (1) and (2) as above was thermostatted at 70°C and then cooled to 25°C. The time required to obtain equilibrium was three weeks. The solubility of (1) in (2) was measured by glc. A Perkin-Elmer model F-11 gas chromatograph equipped with a 100-150 mesh Porasil column (70°C) and a flame ionization detector was used. Saturated solutions of heptane in (2) were used as standard solutions.

 Source and Purity of Materials:
   (1) not specified.
   (2) not specified.

 Estimated Errors:
   Solubility: 0.5 mg(1)/kg(2) (standard deviation from 7-9 determinations)