IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Cyclopentane with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Cyclopentane; C5H10; [287-92-3]  NIST Chemistry WebBook for detail
Original Measurements:
   McAuliffe, C., J. Phys. Chem. 1966, 70, 1267-75.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   M.C. Haulait-Pirson

 Experimental Remarks:
   The solubility of cyclopentane in water at 25 °C was reported to be 156 mg(1)/kg sln, (0.0156 g/100 g sln).
The corresponding mole fraction, x1, calculated by the compiler, is 4.0 x 10-5.
The same value is also reported in refs 1 and 2.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   In a 250 mL glass bottle, 10-20 mL of (1) was vigorously shaken for 1 hr or magnetically stirred for 1 day, with 200 mL of (2) at 25 °C. In the case of shaking, the solution was allowed to stand for 2 days to permit separation of small (1) droplets. Absence of emulsion was checked microscopically. A 50 microliter sample of the (1) saturated water was withdrawn with a Hamilton Syringe and injected into the fractionator of the gas chromatograph. A hydrogen-flame ionization detector was used. Many details are given in the paper.

 Source and Purity of Materials:
   (1) Phillips Petroleum or Columbia Chemical; used as received.
   (2) distilled.

 Estimated Errors:
   Solubility: 9 mg (1)/kg sln (standard deviation from mean)
   Temperature: ± 1.5 K

 References:
   1McAuliffe, C. Nature (London) 1963, 200, 1092.
   2McAuliffe, C. Amer. Chem. Soc. Div. Petrol. Chem. 1964, 9, 275.