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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
1-Proponal with 1-Heptene and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) 1-Heptene; C7H14; [592-76-7]
NIST Chemistry WebBook
for detail
(3) 1-Proponal (n-propanol, propyl alcohol, n-propyl alcohol); C3H8O; [71-23-8]
NIST Chemistry WebBook
for detail
Original Measurements:
Letcher, T.M.; Bricknell, B.C.; Sewry, I.D.; Radloff, S.E.; J. Chem. Eng. Data 39, 320-3 (1994).
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
1.000
0.000
1.000
25.0
298.2
0.051
0.945
0.080
0.901
25.0
298.2
0.114
0.878
0.168
0.792
25.0
298.2
0.216
0.764
0.287
0.622
25.0
298.2
0.306
0.655
0.365
0.479
25.0
298.2
0.397
0.534
0.416
0.343
25.0
298.2
0.480
0.411
0.439
0.230
25.0
298.2
0.536
0.311
0.433
0.154
25.0
298.2
0.571
0.210
0.400
0.090
25.0
298.2
0.550
0.114
0.316
0.040
25.0
298.2
0.495
0.068
0.248
0.021
25.0
298.2
0.420
0.037
0.186
0.010
25.0
298.2
0.313
0.021
0.123
0.005
25.0
298.2
0.081
0.005
0.026
0.001
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
0.509
0.178
0.365
0.060
hydrogen-rich phase
25.0
298.2
0.483
0.314
0.420
0.128
hydrogen-rich phase
25.0
298.2
0.346
0.572
0.420
0.326
hydrogen-rich phase
25.0
298.2
0.234
0.730
0.349
0.511
hydrogen-rich phase
25.0
298.2
0.068
0.926
0.132
0.838
hydrogen-rich phase
25.0
298.2
0.300
0.043
0.150
0.010
water-rich phase
25.0
298.2
0.274
0.039
0.134
0.009
water-rich phase
25.0
298.2
0.237
0.036
0.112
0.008
water-rich phase
25.0
298.2
0.168
0.024
0.075
0.005
water-rich phase
25.0
298.2
0.063
0.010
0.026
0.002
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. The tie line compositions were determined by the refractive index method reported in Ref. 2 and complementary method using the Karl Fishcer 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=0.79979, n=1.3837.
(2) BDH; used as received; purity better than 99.6 mole % 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).