Home
Introduction
Search Menu
IUPAC Series (PDF)
Reference
Version History
About the Project
Disclaimer
Contact Us
Acknowledgements
IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ethanol with Hexane (n-hexane) with Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Ethanol (ethyl alcohol); C2H6O; [64-17-5]
NIST Chemistry WebBook
for detail
(3) Hexane (n-hexane); C6H14; [110-54-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Tarasenkov, D.N.; Paulsen, I.A., Zh. Obshch. Khim. 7, 2143 (1937).
Variables:
Temperature = 273 K - 298 K
Prepared By:
A. Skrzecz
Experimental Data:
(Notes on the Nomenclature)
Compositions along the saturation curve
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
0.0
273.15
0.0653
0.9270
0.1125
0.8536
0.0
273.15
0.4430
0.5410
0.5730
0.3741
0.0
273.15
0.5332
0.4539
0.6592
0.3000
0.0
273.15
0.6334
0.3518
0.7371
0.2189
0.0
273.15
0.7401
0.2167
0.7658
0.1199
0.0
273.15
0.7922
0.1186
0.7310
0.0585
0.0
273.15
0.7874
0.0796
0.6730
0.0364
0.0
273.15
0.7908
0.0732
0.6715
0.0332
0.0
273.15
0.7682
0.0400
0.6001
0.0167
0.0
273.15
0.6985
0.0213
0.4897
0.0080
0.0
273.15
0.6943
0.0157
0.4807
0.0058
0.0
273.15
0.6004
0.0094
0.3745
0.0031
0.0
273.15
0.4312
0.0042
0.2297
0.0012
25.0
298.15
0.0310
0.9592
0.0545
0.9014
25.0
298.15
0.1852
0.7997
0.2843
0.6564
25.0
298.15
0.3628
0.6164
0.4866
0.4420
25.0
298.15
0.3782
0.5970
0.4971
0.4195
25.0
298.15
0.5194
0.4591
0.6336
0.2994
25.0
298.15
0.6803
0.2811
0.7321
0.1617
25.0
298.15
0.7384
0.1761
0.7024
0.0896
25.0
298.15
0.7473
0.1293
0.6602
0.0611
25.0
298.15
0.7352
0.0800
0.5879
0.0342
25.0
298.15
0.6749
0.0361
0.4709
0.0135
25.0
298.15
0.5381
0.0186
0.3200
0.0059
25.0
298.15
0.3668
0.0121
0.1870
0.0033
Compositions of coexisting phases
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
Comment(s)
25.0
298.15
0.0008
0.9931
0.0015
0.9700
hydrocarbon-rich phase
25.0
298.15
0.0175
0.9771
0.0316
0.9434
hydrocarbon-rich phase
25.0
298.15
0.3767
0.0023
0.1916
0.0006
water-rich phase
25.0
298.15
0.5692
0.0291
0.3531
0.0097
water-rich phase
Method/Apparatus/Procedure:
A titration method similar to that in Ref. 1 was used. A flask of 100 mL capacity containing a binary hexane-alcohol mixture of known composition, by weight, was placed in a thermostat. The mixture was titrated with water from a microburette with a scale of 0.01 mL, until opalescence, emulation or turbidity was observed. Samples of the same binary composition were titrated several times. Compositions of coexisting phases were obtained by an analytical method similar to that in Ref. 2. Experimental points were located on the binodal curve obtained by the authors. The ternary mixture became homogeneous when the hexane concentration reached 79.4 mass % at 0°C and 74.73 mass % at 25°C.
Source and Purity of Materials:
(1) Source not specified; purity of 99.97% for 3 points of the lower alcohol concentration at each temperature and purity of 92.64% for all other points.
(2) Source not specified; distilled; b.p.=68.65°C, d(20°C,4°C)=0.6898.
(3) Source not specified.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ±0.05°C.
References:
1
R. E. Washburn, J. Am. Soc. 53, 3237 (1931).
2
D. N. Ttrasenkov and E. N. Polozhentseva, Zh. Obshch. Khim. 2, 84 (1932).