IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Heptane with Seawater
Components:
   (1) Heptane; C7H16; [142-82-5]  NIST Chemistry WebBook for detail
   (2) Seawater; ; []  NIST Chemistry WebBook for detail
Original Measurements:
   Krasnoschchekova, R.Ya.; Gubergrits, M.Ya., Neftekhimiya 1973, 13, 885-8.

 Variables:
   Temperature = 25 °C
   Concentration = Salinity: 6 g/kg sln

 Prepared By:
   M. Kleinschmidt

 Experimental Remarks:
   The solubility of heptane in seawater was reported to be 1.03 x 10-3 g(1)/100 g sln. And the corresponding mole fraction, x1 = 1.9 x 10-6.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   A saturated solution was prepared by vigorously stirring hydrocarbon (1) in seawater (2) for 10-12 hrs. in a flask placed in a temperature controlled bath. A sample of solution was then transferred to a closed flask with head space volume equal to solution volume. Hydrocarbon concentration in the head space was determined by gas chromatography and the corresponding solution concentration calculated.

 Source and Purity of Materials:
   (1) "chemically pure"
   (2) distilled water plus salt mixture.

 Estimated Errors:

   Temperature: not specifed.