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:
   Korenman, I.M.; Aref'eva, R.P., Patent USSR, 553 524, 1977.04.05 C.A. 87:87654.

 Variables:
   Temperature = One temperature: 20 °C

 Prepared By:
   A. Maczynski

 Experimental Remarks:
   The solubility of heptane in water at 20°C was reported to be 0.06 g(1)dm-3(2).
The corresponding mass percent and mole fraction, x1, calculated by the compiler are 0.006 g(1)/100 g sln and 1.1 x 10-5. The assumption that 1 dm3 sln = 1 kg sln was used in the calculation.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   About 100-500 mL (2) was placed in a glass cylinder and 10-50 mg of an insoluble indicator was added and (1) was microburetted until the indicator floated to form a colored thin layer on the cylinder wall 2-3 cm above the liquid layer. After each drop of (1), the mixture was vigorously mixed fr 0.5-1.5 min.

 Source and Purity of Materials:
   (1) not specified.
   (2) not specified.

 Estimated Errors:

   Temperature: not specified.