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:
   Bittrich, H.J.; Gedan, H.; Feix, G., Z. Phys. Chem., Leipzig 1979, 260 1009-13.

 Variables:
   Temperature = 25-40 °C

 Prepared By:
   M.C. Haulait-Pirson

 Experimental Data:   (Notes on the Nomenclature)
  
Solubility of heptane in water
t/°C103 * g1/kgg1/100 g solution (compiler)Mole Fraction x1 (compiler)
Unspecified3.70.000376.6 x 10-7
Solubility of water in heptane
t/°C103 * g2/kgg2/100 g solution (compiler)Mole Fraction x2 (compiler)
251210.01216.73 x 10-4
401560.01568.68 x 10-4
 Method/Apparatus/Procedure:
   A mixture of (1) and (2) was shaken with no access of air at a specified temperature and then thermostatted for 48 hr. The equilibrated phases were sampled and analysed b gas chromatography using a flame-ionization detector. A 3-m-steel column of 15% nitril silicone on Porolith, 110 °C and a 3-m-steel column of 1.5 g CaC,sub>2 and 10% SE 30 on chromaton N, 120°C were used for 91) and 92) respectively.

 Source and Purity of Materials:
   (1) source not specified; distilled or crysatillzed; purity tested by gas chromatography.
   (2) not specified.

 Estimated Errors:
   Solubility: ± 9% (type of error not specified).