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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Methanol with p-Xylene and water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Methanol (methyl alcohol); CH4O; [67-56-1]
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
0.051
0.947
0.150
0.840
25.0
298.2
0.099
0.896
0.263
0.716
25.0
298.2
0.198
0.791
0.433
0.523
25.0
298.2
0.294
0.685
0.548
0.385
25.0
298.2
0.388
0.582
0.629
0.285
25.0
298.2
0.479
0.479
0.686
0.207
25.0
298.2
0.565
0.376
0.721
0.145
25.0
298.2
0.639
0.275
0.730
0.095
25.0
298.2
0.695
0.173
0.707
0.053
25.0
298.2
0.692
0.078
0.615
0.021
25.0
298.2
0.636
0.021
0.508
0.005
25.0
298.2
0.544
0.013
0.407
0.003
25.0
298.2
0.448
0.005
0.315
0.001
25.0
298.2
0.338
0.005
0.224
0.001
25.0
298.2
0.150
0.000
0.090
0.000
25.0
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
0.123
0.870
0.310
0.660
hydrocarbon-rich phase
25.0
298.2
0.049
0.948
0.144
0.842
hydrocarbon-rich phase
25.0
298.2
0.019
0.977
0.058
0.916
hydrocarbon-rich phase
25.0
298.2
0.006
0.992
0.021
0.970
hydrocarbon-rich phase
25.0
298.2
0.002
0.997
0.005
0.985
hydrocarbon-rich phase
25.0
298.2
0.608
0.318
0.728
0.115
water-rich phase
25.0
298.2
0.714
0.133
0.695
0.039
water-rich phase
25.0
298.2
0.700
0.071
0.620
0.019
water-rich phase
25.0
298.2
0.552
0.022
0.419
0.005
water-rich phase
25.0
298.2
0.306
0.000
0.199
0.000
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).