IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Heptane with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Heptane; C7H16; [142-82-5]  NIST Chemistry WebBook for detail
Original Measurements:
   Krasnoschchekova, R.Ya.; Gubergrits, M.Ya., Neftekhimiya 1973, 13, 885-8.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   A. Maczynski

 Experimental Remarks:
   The solubility of heptane in water at 25°C was reported to be x1 = 5.0 x 10-7.
The corresponding mass percent calculated by the compiler is 2.8 x 10-4 g(1)/100 g sln.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   A mixture of 10 mL (1) and 300 mL (2) was placed in a double-walled bottom-stoppered vessel and vigorously stirred magnetically for 10-12 hr. The phases were allowed to separate; a first sample of the water phase was rejected and next 200 mL of this phase was taken, 20-mL aliquots were introduced into 40-mL hermetic bottles and (1) was allowed to equilibrate with the air, and the (1)-saturated air was analyzed by glc.

 Source and Purity of Materials:
   (1) source not specified; CP reagent; purity not specified.
   (2) distilled.

 Estimated Errors:

   Temperature: not specified.