IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Pentane with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Pentane; C5H12; [109-66-0]  NIST Chemistry WebBook for detail
Original Measurements:
   Barone, G.; Crescenzi, V.; Pispisa, B.; Quadrifoglio, F., J. Macromol. Chem. 1966, 1, 761-71.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   M.C. Haulait-Pirson

 Experimental Remarks:
   The authors report a value a 0.00103 mol(1)/dm3 (2) for the solubility of pentane in water at 25 °C. This value is the experimental one multiplied by 760/p where p is the partial pressure at (1) over (2). p = 508 mm hg. The solubility of system pressure calculated by the compiler is 6.88 x 10-4 mol(1)/dm3(2) and the corresponding mass percent and mole fraction, x1, are 0.00497 g(1)/100 g sln and 1.24 x 10-5 (with the assumption of a solution density of 1 g cm-3.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   The saturation was carried out by bubbling the vaporized (1) into the solution and letting an excess of the condensed (1) stand in contact with the aqueous phase for more than 12 hr at 25 °C under gentle shaking. 0.20 mL samples of (2) saturated with (1) were taken with a calibrated syringe and injected into the chromatographic column packed with 15% of poly(propylene glycol) on chromosorb. A gas chromatography unit having a tungstenwire katharometer as detector was employed. More details are given in the paper.

 Source and Purity of Materials:
   (1) RP product, C. Erba, Milan; chromatographically pure.
   (2) not specified.

 Estimated Errors:
   Solubility: ± 4% (type of error not specified).
   Temperature: ± 0.02 K