IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Dodecane with Salt mixture
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Dodecane; C12H26; [112-40-3]  NIST Chemistry WebBook for detail
   (3) Salt mixture (ref 1); ; []  NIST Chemistry WebBook for detail
Original Measurements:
   Button, D.K., Geochim. Cosmochim. Acta 1975, 40, 435-40.

 Variables:
   Temperature = 25 °C
   Pressure = Different periods of standing   
pH = Constant salinity: 12 g(2)/kg sln
   Concentration = Constant salinity: 12 g(2)/kg sln

 Prepared By:
   P. Meyers and D. Shaw

 Experimental Remarks:
   Dodecene concentration in saline medium after gently stirring for 1 week and then remaining quiescent for the periods shown.

   Time, Weeks       Dodecene, ug(1)/L(2)

   1                2.16 +/- 0.03
   8                1.80 +/- 0.02
   16             1.78 +/- 0.02

The corresponding mass percent and mole fraction calculated by the compilers for the results at 16 weeks are are 1.74 x 10-7 g(1)/100 g sln and 1.89 x 10-10 using the assumption that the solution density is 1.02 kg/L.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   Dodecane solutions were prepared in a chemically defined solution resembling dilute seawater. In addition to the mineral salts and vitamins reported (ref 1), the solution contained 1 mg/L arginine and 10 g/L NaCl. After sterilization (121°C for 30 min), 0.8 µL of 14C-dodecane was sprayed on to the medium surface to form a thin film. Gentle subsurface agitation was induced by a 3 in magnet rotating at 60 rev/min against the inside carboy wall at midlevel. The subsurface dodecane concentration was determined from the radioactivity of samples collected from a port at the bottom of the carboy. The system was stirred for 1 week and then allowed to stand. Equilibrium appeared to have been achieved within 8 weeks.

 Source and Purity of Materials:
    Amersham Searle Corp. (Arlington Heights, I11.) supplied the [1-14C] dodecane, 27 µCi/µmol. It was accompanied by a gas chromatogram of the preparation showing a single peak at the appropriate location.

 Estimated Errors:

   Temperature: Experimental error is estimated at ± 1%.

 References:
   1Button, D. K. Limnol. Oceanogr. 1969, 14, 95-100.