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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
2-Propanol with Cyclohexane 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) Cyclohexane; C6H12; [110-82-7]
NIST Chemistry WebBook
for detail
Original Measurements:
Verhoeye, L.A.J., J. Chem. Eng. Data 13, 462 (1968).
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
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
25.0
298.2
0.0000
0.0010
0.0000
0.0002
25.0
298.2
0.0500
0.0015
0.0156
0.0003
25.0
298.2
0.0995
0.0030
0.0321
0.0007
25.0
298.2
0.1495
0.0040
0.0502
0.0010
25.0
298.2
0.2450
0.0055
0.0891
0.0014
25.0
298.2
0.2975
0.0065
0.1134
0.0018
25.0
298.2
0.3450
0.0090
0.1376
0.0026
25.0
298.2
0.3940
0.0160
0.1660
0.0048
25.0
298.2
0.4360
0.0290
0.1945
0.0092
25.0
298.2
0.4540
0.0360
0.2082
0.0118
25.0
298.2
0.5010
0.0615
0.2500
0.0219
25.0
298.2
0.5365
0.1020
0.2956
0.0401
25.0
298.2
0.5525
0.1410
0.3297
0.0601
25.0
298.2
0.5465
0.2400
0.3821
0.1198
25.0
298.2
0.5300
0.2850
0.3924
0.1507
25.0
298.2
0.5050
0.3350
0.3952
0.1872
25.0
298.2
0.4700
0.4025
0.3974
0.2430
25.0
298.2
0.4450
0.4450
0.3939
0.2813
25.0
298.2
0.4110
0.5000
0.3859
0.3353
25.0
298.2
0.3725
0.5580
0.3715
0.3973
25.0
298.2
0.3325
0.6175
0.3536
0.4690
25.0
298.2
0.2900
0.6750
0.3263
0.5423
25.0
298.2
0.2450
0.7315
0.2897
0.6176
25.0
298.2
0.1975
0.7880
0.2443
0.6959
25.0
298.2
0.1495
0.8455
0.1942
0.7842
25.0
298.2
0.0500
0.9490
0.0684
0.9270
25.0
298.2
0.0000
0.9995
0.0000
0.9977
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
0.019
0.981
0.026
0.974
hydrocarbon-rich phase
25.0
298.2
0.030
0.959
0.040
0.911
hydrocarbon-rich phase
25.0
298.2
0.095
0.903
0.127
0.864
hydrocarbon-rich phase
25.0
298.2
0.140
0.855
0.182
0.796
hydrocarbon-rich phase
25.0
298.2
0.162
0.838
0.213
0.787
hydrocarbon-rich phase
25.0
298.2
0.193
0.794
0.240
0.706
hydrocarbon-rich phase
25.0
298.2
0.228
0.752
0.274
0.646
hydrocarbon-rich phase
25.0
298.2
0.283
0.682
0.319
0.549
hydrocarbon-rich phase
25.0
298.2
0.175
0.004
0.060
0.001
water-rich phase
25.0
298.2
0.218
0.006
0.078
0.002
water-rich phase
25.0
298.2
0.312
0.009
0.121
0.002
water-rich phase
25.0
298.2
0.382
0.010
0.158
0.003
water-rich phase
25.0
298.2
0.422
0.021
0.184
0.007
water-rich phase
25.0
298.2
0.462
0.053
0.218
0.018
water-rich phase
25.0
298.2
0.518
0.075
0.269
0.028
water-rich phase
25.0
298.2
0.555
0.145
0.334
0.062
water-rich phase
Method/Apparatus/Procedure:
The binodal curve was determined by titration of heterogeneous mixture with a homogeneous mixture until turbidity ceased. Two-liquid mixture was mixed for 1 h at constant temperature and after separation samples of each phase were analyzed. Liquid-liquid equilibrium data at boiling points (64.30-69.40°C) at pressure 760 Torr were presented graphically in the paper.
Source and Purity of Materials:
(1) Source not specified; distilled through a glass column (3 cm in diameter, 2 m high, packed in stainless wire) under reflux >10; chosen fractions were used; b.p.=80.4°C, d(25°C,4°C)=0.7808, n(25°C,D)=1.3749.
(2) Source not specified; distilled through a glass column (3 cm in diameter, 2 m high, packed in stainless wire) under reflux >10; chosen fractions were used; b.p.=80.7°C, d(25°C,4°C)=0.7738, n(25°C,D)=1.4238.
(3) Twice distilled.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ±1°C; comp. <0.0005 mole fraction (for the binodal curve).