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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
1-Butanol with Benzene and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) 1-Butanol (n-butanol, butyl alcohol, n-butyl alcohol); C4H10O; [71-36-3]
NIST Chemistry WebBook
for detail
(3) Benzene; C6H6; [71-43-2]
NIST Chemistry WebBook
for detail
Original Measurements:
Washburn, E.R; Strandskov, C.V., J. Phys. Chem. 48, 241 (1944)
Variables:
Temperature = 298 K and 308 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
298.15
0.0988
0.8981
0.1025
0.8843
25.0
298.15
0.1656
0.8263
0.1685
0.7976
25.0
298.15
0.2119
0.7755
0.2120
0.7362
25.0
298.15
0.2546
0.7298
0.2518
0.6848
25.0
298.15
0.3306
0.6432
0.3152
0.5820
25.0
298.15
0.4006
0.5658
0.3724
0.4991
25.0
298.15
0.4397
0.5188
0.3987
0.4464
25.0
298.15
0.5108
0.4342
0.4445
0.3586
25.0
298.15
0.5645
0.3720
0.4789
0.2995
25.0
298.15
0.5955
0.3343
0.4956
0.2640
25.0
298.15
0.6397
0.2758
0.5121
0.2095
25.0
298.15
0.6960
0.2011
0.5312
0.1456
25.0
298.15
0.7480
0.1199
0.5323
0.0810
25.0
298.15
0.7840
0.0472
0.5147
0.0294
25.0
298.15
0.0358
0.0030
0.0090
0.0007
25.0
298.15
0.0237
0.0020
0.0059
0.0005
35.0
308.15
0.0681
0.9290
0.0708
0.9168
35.0
308.15
0.1129
0.8825
0.1165
0.8640
35.0
308.15
0.1632
0.8296
0.1665
0.8032
35.0
308.15
0.2379
0.7467
0.2356
0.7017
35.0
308.15
0.3389
0.6362
0.3243
0.5777
35.0
308.15
0.4063
0.5576
0.3748
0.4881
35.0
308.15
0.4607
0.4913
0.4097
0.4146
35.0
308.15
0.5626
0.3699
0.4722
0.2946
35.0
308.15
0.6071
0.3104
0.4892
0.2373
35.0
308.15
0.6829
0.2071
0.5127
0.1475
35.0
308.15
0.7406
0.1151
0.5130
0.0757
35.0
308.15
0.7747
0.0525
0.5045
0.0324
35.0
308.15
0.0508
0.0028
0.0129
0.0007
35.0
308.15
0.0190
0.0018
0.0047
0.0004
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
298.15
0.024
0.976
0.0253
0.9747
organic-rich phase
25.0
298.15
0.049
0.951
0.0515
0.9485
organic-rich phase
25.0
298.15
0.063
0.936
0.0659
0.9297
organic-rich phase
25.0
298.15
0.252
0.734
0.2505
0.6923
organic-rich phase
25.0
298.15
0.324
0.651
0.3102
0.5914
organic-rich phase
25.0
298.15
0.397
0.569
0.3687
0.5014
organic-rich phase
25.0
298.15
0.451
0.505
0.4059
0.4312
organic-rich phase
25.0
298.15
0.500
0.448
0.4390
0.3732
organic-rich phase
25.0
298.15
0.556
0.383
0.4750
0.3105
organic-rich phase
25.0
298.15
0.598
0.331
0.4966
0.2608
organic-rich phase
25.0
298.15
0.630
0.289
0.5091
0.2216
organic-rich phase
25.0
298.15
0.657
0.254
0.5197
0.1907
organic-rich phase
25.0
298.15
0.752
0.113
0.5316
0.0758
organic-rich phase
25.0
298.15
0.779
0.058
0.5177
0.0366
organic-rich phase
25.0
298.15
0.036
0.962
0.0376
0.9538
organic-rich phase
25.0
298.15
0.086
0.910
0.0890
0.8939
organic-rich phase
25.0
298.15
0.153
0.841
0.1568
0.8179
organic-rich phase
25.0
298.15
0.213
0.774
0.2128
0.7338
organic-rich phase
25.0
298.15
0.288
0.693
0.2813
0.6423
organic-rich phase
25.0
298.15
0.346
0.629
0.3309
0.5708
organic-rich phase
25.0
298.15
0.419
0.543
0.3842
0.4725
organic-rich phase
25.0
298.15
0.497
0.449
0.4340
0.3720
organic-rich phase
25.0
298.15
0.546
0.391
0.4642
0.3154
organic-rich phase
25.0
298.15
0.587
0.338
0.4826
0.2637
organic-rich phase
25.0
298.15
0.645
0.260
0.5029
0.1924
organic-rich phase
25.0
298.15
0.694
0.190
0.5135
0.1334
organic-rich phase
25.0
298.15
0.764
0.075
0.5102
0.0475
organic-rich phase
25.0
298.15
0.019
0.002
0.0047
0.0005
water-rich phase
25.0
298.15
0.025
0.002
0.0062
0.0005
water-rich phase
25.0
298.15
0.029
0.002
0.0072
0.0005
water-rich phase
25.0
298.15
0.038
0.003
0.0095
0.0007
water-rich phase
25.0
298.15
0.041
0.003
0.0103
0.0007
water-rich phase
25.0
298.15
0.045
0.004
0.0114
0.0010
water-rich phase
25.0
298.15
0.049
0.003
0.0124
0.0007
water-rich phase
25.0
298.15
0.050
0.004
0.0127
0.0010
water-rich phase
25.0
298.15
0.053
0.003
0.0135
0.0007
water-rich phase
25.0
298.15
0.055
0.003
0.0140
0.0007
water-rich phase
25.0
298.15
0.058
0.003
0.0148
0.0007
water-rich phase
25.0
298.15
0.060
0.003
0.0153
0.0007
water-rich phase
25.0
298.15
0.064
0.003
0.0164
0.0007
water-rich phase
25.0
298.15
0.067
0.002
0.0172
0.0005
water-rich phase
25.0
298.15
0.017
0.002
0.0042
0.0005
water-rich phase
25.0
298.15
0.027
0.003
0.0067
0.0007
water-rich phase
25.0
298.15
0.031
0.003
0.0077
0.0007
water-rich phase
25.0
298.15
0.035
0.002
0.0088
0.0005
water-rich phase
25.0
298.15
0.038
0.002
0.0095
0.0005
water-rich phase
25.0
298.15
0.040
0.003
0.0100
0.0007
water-rich phase
25.0
298.15
0.044
0.003
0.0111
0.0007
water-rich phase
25.0
298.15
0.046
0.003
0.0116
0.0007
water-rich phase
25.0
298.15
0.049
0.003
0.0124
0.0007
water-rich phase
25.0
298.15
0.051
0.003
0.0129
0.0007
water-rich phase
25.0
298.15
0.053
0.002
0.0134
0.0005
water-rich phase
25.0
298.15
0.058
0.002
0.0148
0.0005
water-rich phase
25.0
298.15
0.065
0.000
0.0166
0.0000
water-rich phase
Method/Apparatus/Procedure:
Solubilities were determined by titration of weighed solutions to permanent appearance of a second phase. Observations were made with both reflected and transmitted light and against a light or dark background. The titrant was added from a pipet which ended with in fine capillary; the amount added was determined by weight. The total mass of the mixture was 18-25 g. Refractive indexes of saturated solutions were measured and plotted as a function of concentration. Tie-lines were determined by adding alcohol in varying amounts to binary water-benzene mixtures. After separation, refractive indexes of conjugate layers were determined and the concentrations were read from the plots.
Source and Purity of Materials:
(1) Eastman Kodak Co., better grade; dried by refluxing over active lime, distilled; d(25°C,4°C)=0.806 49.
(2) Coleman and Bell, reagent quality grade; dried with Na, crystallized several times; f.p.=5.45°C.
(3) Doubly distilled over KMnO
4
.
Estimated Errors:
Solubility: Not reported.
Temperature: Temp. ±0.1°C.