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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
2-Propanol with Mesitylene (1,3,5-trimethylbenzene) 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) Mesitylene (1,3,5-trimethylbenzene); C9H12; [108-67-8]
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
Mole Fraction x
2
25.0
298.2
0.000
0.000
0.000
0.000
25.0
298.2
0.198
0.000
0.069
0.000
25.0
298.2
0.297
0.005
0.113
0.001
25.0
298.2
0.391
0.024
0.166
0.005
25.0
298.2
0.473
0.058
0.229
0.014
25.0
298.2
0.541
0.146
0.326
0.044
25.0
298.2
0.533
0.255
0.389
0.093
25.0
298.2
0.499
0.336
0.410
0.138
25.0
298.2
0.440
0.439
0.415
0.207
25.0
298.2
0.367
0.552
0.403
0.303
25.0
298.2
0.286
0.669
0.370
0.433
25.0
298.2
0.195
0.783
0.297
0.595
25.0
298.2
0.099
0.893
0.174
0.783
25.0
298.2
0.050
0.947
0.093
0.888
25.0
298.2
0.000
0.9998
0.000
0.999
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
0.000
0.9998
0.000
0.999
hydrocarbon-rich phase
25.0
298.2
0.108
0.883
0.187
0.763
hydrocarbon-rich phase
25.0
298.2
0.171
0.812
0.270
0.640
hydrocarbon-rich phase
25.0
298.2
0.232
0.738
0.330
0.525
hydrocarbon-rich phase
25.0
298.2
0.318
0.625
0.387
0.380
hydrocarbon-rich phase
25.0
298.2
0.000
0.000
0.000
0.000
water-rich phase
25.0
298.2
0.422
0.036
0.188
0.008
water-rich phase
25.0
298.2
0.505
0.101
0.270
0.027
water-rich phase
25.0
298.2
0.542
0.154
0.332
0.047
water-rich phase
25.0
298.2
0.530
0.261
0.390
0.096
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 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=0.786 88, n=1.3265.
(2) BDH; used as received; purity better than 99.6 mole % by glc.
(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. Heward, 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).