Home
Introduction
Search Menu
IUPAC Series (PDF)
Reference
Version History
About the Project
Disclaimer
Contact Us
Acknowledgements
IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
2-Butanol with Cyclohexene and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) 2-Butanol (sec-butanol, sec-butyl alcohol, (RS)-2-butanol, dl-2-butanol, DL-2-butanol); C4H10O; [78-92-2]
NIST Chemistry WebBook
for detail
(3) Cyclohexane; C6H12; [110-82-7]
NIST Chemistry WebBook
for detail
Original Measurements:
Letcher, T.M.; Siswana, P.; Radloff, S.E., S. Afr. J. Chem. 44, 118 (1991).
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
0.181
0.000
0.051
0.000
25.0
298.2
0.651
0.000
0.312
0.000
25.0
298.2
0.691
0.013
0.360
0.006
25.0
298.2
0.710
0.027
0.391
0.013
25.0
298.2
0.725
0.070
0.445
0.038
25.0
298.2
0.695
0.174
0.500
0.110
25.0
298.2
0.634
0.273
0.504
0.191
25.0
298.2
0.560
0.374
0.482
0.284
25.0
298.2
0.477
0.477
0.438
0.386
25.0
298.2
0.388
0.581
0.377
0.498
25.0
298.2
0.294
0.687
0.302
0.621
25.0
298.2
0.198
0.792
0.212
0.746
25.0
298.2
0.100
0.897
0.111
0.875
25.0
298.2
0.049
0.949
0.055
0.935
25.0
298.2
0.0000
0.9998
0.000
0.999
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
0.651
0.000
0.312
0.000
organic-rich phase
25.00
298.2
0.723
0.074
0.445
0.040
organic-rich phase
25.00
298.2
0.594
0.329
0.495
0.241
organic-rich phase
25.00
298.2
0.443
0.517
0.416
0.428
organic-rich phase
25.00
298.2
0.271
0.713
0.280
0.650
organic-rich phase
25.00
298.2
0.181
0.000
0.051
0.000
water-rich phase
25.00
298.2
0.153
0.000
0.042
0.000
water-rich phase
25.00
298.2
0.113
0.000
0.030
0.000
water-rich phase
25.00
298.2
0.095
0.000
0.025
0.000
water-rich phase
25.00
298.2
0.070
0.000
0.018
0.000
water-rich phase
Method/Apparatus/Procedure:
The points of the binodal curve were determined by the titration method, as described in Ref. 1. The formation of a cloudy mixture was observed visually on shaking after addition of a known mass of the third component; syringes were precisely weighed. Tie line compositions were determined by the refractive index method, Ref. 2, and a complementary method using the Karl Fischer titration, Ref. 3. Measurements were made at pressure of 94.7 kPa.
Source and Purity of Materials:
(1) Merck; AR grade; dried by addition of anhydrous K
2
CO
3
, distilled; purity >99.9 mole % by glc.
(2) BDH; Gold label grade; used as received; purity >99.9 mole % by glc.
(3) Source not specified.
Estimated Errors:
Solubility: Not reported.
Temperature: Composition ±0.005 mole fraction (binodal curve), ±0.01 mole fraction (tie lines).
References:
1
T. M. Letcher, S. Wootten, B. Shuttleworth, and C. Heyward, 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. Siswana, P. van der Watt, and S. Radloff, J. Chem. Thermodyn. 21, 1053 (1989).