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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
1-Butanol with Hexane (n-hexane) 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) Hexane (n-hexane); C6H14; [110-54-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Sugi, H.; Katayama, T., J. Chem. Eng. Jpn. 10, 400 (1977).
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
0.0000
0.99989
0.0000
0.99949
25.0
298.2
0.1109
0.8866
0.1255
0.8630
25.0
298.2
0.1650
0.8306
0.1839
0.7960
25.0
298.2
0.2134
0.7795
0.2337
0.7342
25.0
298.2
0.2766
0.7093
0.2928
0.6459
25.0
298.2
0.3470
0.6318
0.3548
0.5557
25.0
298.2
0.4339
0.5331
0.4220
0.4460
25.0
298.2
0.5148
0.4356
0.4709
0.3427
25.0
298.2
0.5763
0.3611
0.5035
0.2714
25.0
298.2
0.5894
0.3446
0.5091
0.2560
25.0
298.2
0.6765
0.2324
0.5407
0.1598
25.0
298.2
0.7460
0.1269
0.5413
0.0792
25.0
298.2
0.7835
0.0540
0.5229
0.0310
25.0
298.2
0.8065
0.0000
0.5032
0.0000
25.0
298.2
0.0593
0.0000
0.0151
0.0000
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
0.1368
0.8603
0.1540
0.8328
organic-rich phase
25.0
298.2
0.1921
0.8017
0.2118
0.7601
organic-rich phase
25.0
298.2
0.3464
0.6326
0.3547
0.5571
organic-rich phase
25.0
298.2
0.4330
0.5337
0.4207
0.4460
organic-rich phase
25.0
298.2
0.5544
0.3890
0.4942
0.2983
organic-rich phase
25.0
298.2
0.6414
0.2793
0.5311
0.1989
organic-rich phase
25.0
298.2
0.7578
0.1089
0.5413
0.0669
organic-rich phase
25.0
298.2
0.0266
0.0000
0.0066
0.0000
water-rich phase
25.0
298.2
0.0286
0.0000
0.0071
0.0000
water-rich phase
25.0
298.2
0.0321
0.0000
0.0080
0.0000
water-rich phase
25.0
298.2
0.0360
0.0000
0.0090
0.0000
water-rich phase
25.0
298.2
0.0407
0.0000
0.0102
0.0000
water-rich phase
25.0
298.2
0.0476
0.0000
0.0120
0.0000
water-rich phase
25.0
298.2
0.0510
0.0000
0.0129
0.0000
water-rich phase
Method/Apparatus/Procedure:
A combination of titration and analytical method was used. The apparatus and experimental procedure were described in Ref. 1. For glc analysis a 1.6 m column filled with Poropak-Q was used. Solubility of water in hexane was determined by the Karl Fischer method. Composition of the water-rich phase was determined by the gross composition of phase split liquid mixture and composition of the organic phase (concentration of hexane was assumed to be 0).
Source and Purity of Materials:
(1) Merck Uvasol, spectrograde; used as received; densities agreed within 0.0003 with literature values.
(2) Merck Uvasol, spectrograde; used as received; densities agreed within 0.0003 with literature values.
(3) De-ionized, twice distilled.
Estimated Errors:
Solubility: Not reported.
Temperature: Not reported.
References:
1
H. Sugi, T. Nitta, and T. Katayama, J. Chem. Eng. Jpn. 9, 12 (1976).