IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: 2-Heptene with Water

   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 2-Heptene; C7H14; [592-77-8]  NIST Chemistry WebBook for detail

Original Measurements:
   Natarajan, G.S.; Venkatachalam, K.A., J. Chem. Eng. Data 1972, 17, 328-9.

   Temperature = One temperature: 25 °C

Prepared By:
   M.C. Haulait-Pirson, G.T. Hefter

Experimental Remarks:

   The solubility of 2-heptane in water was reported to be 2.716 x 10-4 mol L-1 at 25°C. a Assuming a solution density of 1.00 g mL-1 the corresponding mass percent and mole fraction (x1) solubilities, calculated by the compilers are respectively, 0.00266 g(1)/100 g sln and 4.89 x 10-6.
Solubility data are also presented as a function of temperature in various salt solutions.

Experimental Data:   (Notes on the Nomenclature)
   Table 1  a  It should be noted that although the authors state that the solubility refers to "water" the context in the paper is ambiguous and the data were probably obtained in 0.001 mol L-1 HNO3 solution.

   15 mL of the aqueous medium was equilibrated with 1 mL of (1) by mechanical shaking in a thermostated glass burette. After settling (judged visually), 5 mL of the aqueous layer was withdrawn and the olefin content determined by titration with bromine using standard procedures.

Source and Purity of Materials:
   (1) Prepared by dehydration of 2-heptanol and then washed, dried, and fractionated. Purity (no specification) was determined by chromatography.
   (2) Not specified.

Estimated Errors:
   Solubility: not specified.
   Temperature: ± 0.05 K