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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ethanol with p-Xylene and 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) p-Xylene (1,4-dimethylbenzene, 1,4-xylene); C8H10; [106-42-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Letcher, T.M.; Siswana, P.M.; van der Watt, P.; Radloff, S., J. Chem. Thermodyn. 21, 1053 (1989).
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
(compiler)
Mass Fraction w
2
(compiler)
Mole Fraction x
1
Mole Fraction x
2
25.0
298.2
0.000
0.9997
0.000
0.998
25.0
298.2
0.050
0.946
0.107
0.875
25.0
298.2
0.099
0.892
0.196
0.763
25.0
298.2
0.195
0.782
0.328
0.572
25.0
298.2
0.287
0.671
0.418
0.424
25.0
298.2
0.374
0.562
0.479
0.312
25.0
298.2
0.455
0.455
0.516
0.224
25.0
298.2
0.525
0.356
0.534
0.157
25.0
298.2
0.587
0.251
0.528
0.098
25.0
298.2
0.604
0.150
0.465
0.050
25.0
298.2
0.599
0.077
0.410
0.023
25.0
298.2
0.532
0.031
0.320
0.008
25.0
298.2
0.443
0.013
0.241
0.003
25.0
298.2
0.349
0.005
0.174
0.001
25.0
298.2
0.151
0.000
0.065
0.000
Compositions of coexisting phases
t/°C
T/K
Mass Fraction w
1
(compiler)
Mass Fraction w
2
(compiler)
Mole Fraction x
1
Mole Fraction x
2
Comment(s)
25.0
298.2
0.282
0.687
0.415
0.433
hydrocarbon-rich phase
25.0
298.2
0.153
0.831
0.275
0.650
hydrocarbon-rich phase
25.0
298.2
0.083
0.909
0.168
0.795
hydrocarbon-rich phase
25.0
298.2
0.030
0.967
0.066
0.919
hydrocarbon-rich phase
25.0
298.2
0.014
0.985
0.031
0.960
hydrocarbon-rich phase
25.0
298.2
0.005
0.994
0.011
0.985
hydrocarbon-rich phase
25.0
298.2
0.430
0.491
0.508
0.525
water-rich phase
25.0
298.2
0.534
0.340
0.532
0.147
water-rich phase
25.0
298.2
0.608
0.202
0.514
0.074
water-rich phase
25.0
298.2
0.582
0.076
0.391
0.022
water-rich phase
25.0
298.2
0.501
0.028
0.292
0.007
water-rich phase
25.0
298.2
0.339
0.005
0.168
0.001
water-rich phase
Method/Apparatus/Procedure:
The titration method was used to determine binodal curve. A binary mixture of known composition was titrated with the third component until cloudiness was observed. Tie line compositions were related to the coexisting curve; water was determined by Karl Fischer titration. The methods were described in Ref. 1.
Source and Purity of Materials:
(1) Source not specified; used as received.
(2) Source not specified; recrystallized three times.
(3) Source not specified.
Estimated Errors:
Solubility: Not reported.
Temperature: Comp. <0.005 mole fraction (estimated authors' precision on binodal curve), <0.01 mole fraction (estimated authors' precision of tie lines).
References:
1
T. M. Letcher, S. Wootten, B. Shuttleworth, and C. Heyward, J. Chem Thermodyn. 18, 1037 (1986).