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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Octane with Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Octane; C8H18; [111-65-9]
NIST Chemistry WebBook
for detail
Original Measurements:
Nelson, H.D.; De Ligny, C.L., Rec. Trav. Chim. Pays-Bas 1968, 87, 528-44.
Variables:
Temperature = 5 - 45 °C
Prepared By:
M.C. Haulait-Pirson
Experimental Data:
(Notes on the Nomenclature)
t/°C
10
3
* g
1
/kg (compiler)
Mole Fraction x
1
Comment(s)
5.0
1.65
2.6 ± 0.6
Solubility of octane in water
15.0
0.89
1.4 ± 0.6
Solubility of octane in water
45.0
1.84
2.9 ± 0.6
Solubility of octane in water
Method/Apparatus/Procedure:
The saturation vessel is drawn in the original paper. (2) was saturated with (1) via the vapor phase: a few drops of (1) were put on the bottom of a tight-fitting flask containing a small flask filled with water. Complete saturation was reached by shaking overnight in an upright position. Samples were taken from the aqueous solution with a microsyringe through the septum and injected into the gas chromatograph equipped with a flame ionization detector. The gas chromatographic conditions are described in the paper.
Source and Purity of Materials:
(1) Fluka purum.
(2) tap-water was refluxed for 8 hours in the presence of KMnO
4
and KOH and distilled. The whole process was repeated once more.
Estimated Errors:
Solubility: error given above (standard deviation)