Components:

(1) Heptane, C7H16; [142-82-5] NIST WebBook
(2) Seawater, H2O; [7732-18-5(C)] NIST WebBook

Original Measurements

Krasnoschchekova, R. Ya.; Gubergrits, M. Ya.; Neftekhimiya 1973, 13, 885-8.

Variables:

Ambient temperature: 25 °C
Salinity: 6 g/kg sln

Prepared by:

M. Kleinschmidt

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:

Ambient temperature: not specifed.

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