IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: 2-Propanol with Hexane (n-hexane) and Water

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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) Hexane (n-hexane); C6H14; [110-54-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Vorobeva, A.I.; Karapetyants, M., Kh., Zh. Fiz. Khim. 41, 1984-9 (1967).

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 w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
25	298.2	0.000	0.999	0.0000	0.9952
25	298.2	0.136	0.856	0.1790	0.7858
25	298.2	0.199	0.784	0.2480	0.6813
25	298.2	0.315	0.642	0.3476	0.4941
25	298.2	0.423	0.492	0.4030	0.3269
25	298.2	0.520	0.335	0.4203	0.1888
25	298.2	0.577	0.206	0.3994	0.0994
25	298.2	0.587	0.135	0.3649	0.0585
25	298.2	0.518	0.051	0.2601	0.0179
25	298.2	0.452	0.024	0.2039	0.0076
25	298.2	0.324	0.005	0.1263	0.0014

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)	Comment(s)
25	298.2	0.068	0.930	0.094	0.897	hydrocarbon-rich phase
25	298.2	0.074	0.923	0.102	0.885	hydrocarbon-rich phase
25	298.2	0.116	0.874	0.153	0.803	hydrocarbon-rich phase
25	298.2	0.165	0.823	0.212	0.737	hydrocarbon-rich phase
25	298.2	0.206	0.776	0.255	0.670	hydrocarbon-rich phase
25	298.2	0.254	0.719	0.300	0.593	hydrocarbon-rich phase
25	298.2	0.315	0.642	0.348	0.494	hydrocarbon-rich phase
25	298.2	0.344	0.604	0.366	0.449	hydrocarbon-rich phase
25	298.2	0.376	0.559	0.383	0.397	hydrocarbon-rich phase
25	298.2	0.418	0.498	0.400	0.332	hydrocarbon-rich phase
25	298.2	0.442	0.462	0.408	0.297	hydrocarbon-rich phase
25	298.2	0.482	0.398	0.416	0.240	hydrocarbon-rich phase
25	298.2	0.256	0.004	0.0939	0.0010	water-rich phase
25	298.2	0.274	0.004	0.1020	0.0010	water-rich phase
25	298.2	0.354	0.009	0.1424	0.0025	water-rich phase
25	298.2	0.436	0.022	0.1930	0.0068	water-rich phase
25	298.2	0.510	0.045	0.2517	0.0155	water-rich phase
25	298.2	0.569	0.094	0.3235	0.0373	water-rich phase
25	298.2	0.586	0.150	0.3729	0.0666	water-rich phase
25	298.2	0.576	0.209	0.4003	0.1013	water-rich phase
25	298.2	0.560	0.256	0.4141	0.1320	water-rich phase
25	298.2	0.534	0.308	0.4185	0.1683	water-rich phase
25	298.2	0.520	0.335	0.4203	0.1888	water-rich phase
25	298.2	0.482	0.398 (a)	0.416	0.240	water-rich phase

Notes:
   ^a  Critical point obtained graphically by the authors.

Method/Apparatus/Procedure:
   The experimental methods were described in Ref. 1. Water impurities in alcohol were taken into account in the measurements. Critical point of liquid-liquid equilibrium was obtained graphically by the method reported in Ref. 2.

Source and Purity of Materials:
   (1) Source and method of preparation were reported in Ref. 1.
   (2) Source not specified; pure grade; distilled; water concentration was analyzed by the Karl Fischer method.
   (3) Doubly distilled.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Not specified.

References:
   ¹ A. I. Vorobeva and M. Kh. Karapetyants, Zh. Fiz. Khim. 40, 3018 (1966).
   ² E. F. Zilberman, Zh. Fiz. Khim. 26, 1458 (1952).

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Last updated: February 18, 2015 (Created: August 17, 2007)