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:
   Leinonen, P.J.; Mackay, D., Can. J. Chem. Eng. 1973, 51, 230-3.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   M.C. Haulait-Pirson

 Experimental Remarks:
   The solubility of cyclohexane in water at 25 °C was reported tobe 56.7 mg(1) dm-3 sln.
With the assumption of a solution density of 1.00 g cm-3, the corresponding mass percent is 0.00567 g(1)/100 g sln and the corresponding mole fraction, x1, is 1.21 x 10-5 (compiler).

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   A mixture of (1) and (2) was equilibrated for at least 12 hours in a 200 mL Teflon stoppered vessel with gentle shaking. The solution was allowed to settle for 6 hrs and the aqueous phase was tested (Tyndall effect). Both phases were analyzed by the gas chromatographic technique of internal standardization. The (1) in the aqueous phase was extracted into 5 mL of heptane and the extract analysed by GLC. The instrument was a Hewlett-Packard model equipped with a flame ionization detector.

 Source and Purity of Materials:
   (1) Phillips Petroleum Co.; research grade; purity 99%+; used without further purification.
   (2) doubly distilled.

 Estimated Errors:
   Solubility: ± 1 mg(1)dm-3 sln
   Temperature: ± 0.1 K