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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
2-Propanol with m-Xylene (1,3-xylene) and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) 2-Propanol (isopropanol, isopropyl alcohol); C3H8O; [67-63-0]
NIST Chemistry WebBook
for detail
(3) m-Xylene (1,3-dimethylbenzene, 1,3-xylene); C8H10; [108-38-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Letcher, T.M.; Siswana, P.M., Fluid Phase Equilib. 74, 203 (1992).
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
(compiler)
Mole Fraction x
2
(compiler)
25.0
298.2
0.000
0.000
0.000
0.000
25.0
298.2
0.249
0.005
0.091
0.001
25.0
298.2
0.347
0.009
0.139
0.002
25.O
298.2
0.432
0.039
0.195
0.010
25.0
298.2
0.498
0.094
0.261
0.028
25.0
298.2
0.503
0.215
0.322
0.078
25.0
298.2
0.482
0.323
0.367
0.139
25.0
298.2
0.436
0.435
0.391
0.221
25.0
298.2
0.369
0.552
0.390
0.330
25.0
298.2
0.287
0.669
0.353
0.466
25.0
298.2
0.196
0.783
0.276
0.625
25.0
298.2
0.099
0.894
0.157
0.806
25.0
298.2
0.051
0.946
0.085
0.899
25.0
298.2
0.000
0.999
0.000
0.997
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
0.000
0.9998
0.000
0.999
hydrocarbon-rich phase
25.0
298.2
0.018
0.979
0.031
0.953
hydrocarbon-rich phase
25.0
298.2
0.084
0.908
0.134
0.823
hydrocarbon-rich phase
25.0
298.2
0.210
0.762
0.286
0.588
hydrocarbon-rich phase
25.0
298.2
0.317
0.624
0.366
0.407
hydrocarbon-rich phase
25.0
298.2
0.439
0.420
0.383
0.207
hydrocarbon-rich phase
25.0
298.2
0.000
0.000
0.000
0.000
water-rich phase
25.0
298.2
0.245
0.005
0.089
0.001
water-rich phase
25.0
298.2
0.328
0.009
0.129
0.002
water-rich phase
25.0
298.2
0.429
0.036
0.192
0.009
water-rich phase
25.0
298.2
0.475
0.072
0.234
0.020
water-rich phase
25.0
298.2
0.510
0.202
0.322
0.072
water-rich phase
Method/Apparatus/Procedure:
The points on the binodal curve were determined by the formation of a cloudy mixture on shaking after the addition of a known mass of one component to a mixture of known masses of the other two components. Precision weighing syringes were used as described in Ref. 1. Tie line compositions were determined by the refractive index method reported in Ref. 2 and a complementary method using the Karl Fischer titrations as reported in Ref. 3.
Source and Purity of Materials:
(1) Merck, AR grade; distilled; dried by refluxing with Mg and I
2
; purity better than 99.6 mole % by glc; d=0.781 51, n=1.3752.
(2) BDH; used as received; purity better than 99.6 mole % by glc; d=0.860 32, n=1.54946.
(3) Source not specified.
Estimated Errors:
Solubility: Not reported.
Temperature: Estimated comp. 0.005 mole fraction on the binodal curve and 0.01 mole fraction for tie lines (estimated by the authors).
References:
1
T. M. Letcher, S. Wootten, B. Shuttleworth, and C. Heyward, J. Chem. Thermodyn. 18, 1037 (1986).
2
S. W. Briggs and E. W. Comings, Ind. Eng. Chem. 35, 411 (1943).
3
T. M. Letcher, P. M. Siswana, P. Van der Watt, and S. Radloff, J. Chem. Thermodyn. 21, 1053 (1989).