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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
1-Proponal with p-Xylene and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) 1-Proponal (n-propanol, propyl alcohol, n-propyl alcohol); C3H8O; [71-23-8]
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
298.2
0.000
0.9997
0.000
0.998
25
298.2
0.050
0.945
0.083
0.889
25
298.2
0.099
0.892
0.157
0.798
25
298.2
0.196
0.783
0.277
0.626
25
298.2
0.287
0.672
0.358
0.474
25
298.2
0.374
0.562
0.413
0.351
25
298.2
0.451
0.454
0.441
0.251
25
298.2
0.517
0.345
0.442
0.167
25
298.2
0.558
0.239
0.408
0.099
25
298.2
0.537
0.136
0.315
0.045
25
298.2
0.497
0.095
0.260
0.028
25
298.2
0.425
0.054
0.194
0.014
25
298.2
0.341
0.026
0.138
0.006
25
298.2
0.149
0.000
0.050
0.000
25
298.2
0.000
0.000
0.000
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
0.544
0.119
0.314
0.039
hydrocarbon-rich phase
25.0
298.2
0.547
0.279
0.426
0.123
hydrocarbon-rich phase
25.0
298.2
0.451
0.453
0.439
0.250
hydrocarbon-rich phase
25.0
298.2
0.326
0.624
0.385
0.418
hydrocarbon-rich phase
25.0
298.2
0.153
0.833
0.228
0.702
hydrocarbon-rich phase
25.0
298.2
0.344
0.039
0.142
0.009
water-rich phase
25.0
298.2
0.217
0.020
0.078
0.004
water-rich phase
25.0
298.2
0.153
0.016
0.052
0.003
water-rich phase
25.0
298.2
0.115
0.011
0.038
0.002
water-rich phase
25.0
298.2
0.075
0.006
0.024
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).