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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
2-Heptene with Water
Components:
(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.
Variables:
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 (
x
1
) 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)
Notes:
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
HNO
3
solution.
Method/Apparatus/Procedure:
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 After settling (judged visually), 5 mL of the aqueous layer was withdrawn and the olefin content determined by titration with bromine using standard procedures.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