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:
   Roddy, J.W.; Coleman, C.F., Talanta 1968, 15, 1281-6.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   M.C. Haulait-Pirson

 Experimental Remarks:
   The solubility of water in cyclohexane at 25°C was reported to be 0.00345 mol(2) dm×3 sln corresponding to a mole fraction, x2, of 3.75 × 10–4. The corresponding mass percent value calculated by the compiler is 0.0080 g(2)/100 g sln.
The compiler's calculation assumes a solution density of 0.7739 g mL–1 (density of cycolhexane reported in ref 1).

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   A method of gravimetric absorption monitored by tritium tracer was used. (1) was equilibrated with a slight excess of titrated water by shaking over a period of at least 8 hr in a thermostat. The phases were allowed to separate for at least 16 hr and then were sampled for tritum analysis. Most of the (1) phase was weighed into a boiling flask of a closed distillation system and then distilled through a magnesium perchlorate weighing tube. The magnesium perchlorate was then dissoled for measurement of its tritum content by liquid scintillation counting wih\th a Packard Tri-Carb Scintillation Spectrometer.

 Source and Purity of Materials:
   (1) source not specified; spectralgrade reagent.
   (2) tritiated water at 5 Ci/mL; New England Nuclear Corp.; diluted to about 1 mCi/mL.

 Estimated Errors:
   Solubility: better than 1% (type of error not specified)

 References:
   1Goldman, S. Can. J. Chem., 1974, 52, 1968.