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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ethanol with Benzene and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Benzene; C6H6; [71-43-2]
NIST Chemistry WebBook
for detail
(3) Ethanol (ethyl alcohol); C2H6O; [64-17-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Bancroft and S. S. Hubard, J. Am. Chem. Soc. 64, 347 (1942).
Variables:
Temperature = 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)
25.0
298.2
0.3411
0.0109
0.1702
0.0032
25.0
298.2
0.5025
0.2799
0.4105
0.1349
25.0
298.2
0.3604
0.5471
0.3919
0.3509
25.0
298.2
0.2570
0.6939
0.3246
0.5168
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
298.2
0.006
0.993
0.0101
0.9856
hydrocarbon-rich phase
25.0
298.2
0.020
0.978
0.0332
0.9583
hydrocarbon-rich phase
25.0
298.2
0.036
0.959
0.0586
0.9206
hydrocarbon-rich phase
25.0
298.2
0.057
0.937
0.0912
0.8842
hydrocarbon-rich phase
25.0
298.2
0.083
0.908
0.1294
0.8347
hydrocarbon-rich phase
25.0
298.2
0.086
0.904
0.1334
0.8269
hydrocarbon-rich phase
25.0
298.2
0.106
0.881
0.1609
0.7887
hydrocarbon-rich phase
25.0
298.2
0.128
0.855
0.1894
0.7462
hydrocarbon-rich phase
25.0
298.2
0.156
0.823
0.2244
0.6983
hydrocarbon-rich phase
25.0
298.2
0.190
0.781
0.2622
0.6355
hydrocarbon-rich phase
25.0
298.2
0.504
0.277
0.4106
0.1331
hydrocarbon-rich phase
25.0
298.2
0.265
0.683
0.3309
0.5030
hydrocarbon-rich phase
25.0
298.2
0.092
0.002
0.0382
0.0005
water-rich phase
25.0
298.2
0.181
0.002
0.0797
0.0005
water-rich phase
25.0
298.2
0.275
0.005
0.1298
0.0014
water-rich phase
25.0
298.2
0.358
0.013
0.1813
0.0039
water-rich phase
25.0
298.2
0.430
0.031
0.2354
0.0100
water-rich phase
25.0
298.2
0.436
0.034
0.2407
0.0111
water-rich phase
25.0
298.2
0.477
0.053
0.2789
0.0183
water-rich phase
25.0
298.2
0.505
0.091
0.3173
0.0337
water-rich phase
25.0
298.2
0.524
0.135
0.3551
0.0540
water-rich phase
25.0
298.2
0.521
0.215
0.3938
0.0958
water-rich phase
25.0
298.2
0.504
0.277
0.4106
0.1331
water-rich phase
25.0
298.2
0.454
0.388
0.4177
0.2105
water-rich phase
Method/Apparatus/Procedure:
The binodal curve was prepared by the titration method in glass-stoppered thermostated flasks. The end-point was taken as the first appearance of cloudiness (when water was the saturating liquid) and the first appearance of tiny drops (when benzene was the saturating liquid). The phase equilibrium data were obtained by the authors' new procedure described in the paper. A binary homogeneous mixture of known composition was added to a known amount of the phase until homogenization was observed. Then the phase composition was calculated, by trial-and-error method, using the authors knowledge about binodal curve. Data reported in Ref. 1 and 2 were included in the description of the saturation curve.
Source and Purity of Materials:
(1) Source not specified; absolute alcohol; dried with CaO, distilled.
(2) Source not specified; thiophene-fee grade; dried with CaO, distilled
(3) Distilled.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ±0.1°C.
References:
1
A. T. Lincoln, J. Phys. Chem. 4. 161 (1990).
2
K. A. Varteressian and M. R. Fenske, Ind. Eng. Chem. 28, 928 (1936).