IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

---

 Solubility System: Ethanol with Hexane (n-hexane) with Water

---

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Ethanol (ethyl alcohol); C2H6O; [64-17-5]  NIST Chemistry WebBook for detail
   (3) Hexane (n-hexane); C6H14; [110-54-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Moriyoshi, T.; Uosaki, Y.; Matsuura, H.; Nishimoto, W., J. Chem. Thermodyn, 20, 551 (1988).

Variables:
   Temperature = 298 K

Prepared By:
   A. Skrzecz

Experimental Data:   (Notes on the Nomenclature)
  

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1 (compiler)	Mass Fraction w2 (compiler)	Mole Fraction x1	Mole Fraction x2	Comment(s)
25.00	298.15	0.014	0.986	0.026	0.974	hydrocarbon-rich phase
25.00	298.15	0.017	0.983	0.031	0.966	hydrocarbon-rich phase
25.00	298.15	0.023	0.977	0.042	0.956	hydrocarbon-rich phase
25.00	298.15	0.025	0.972	0.046	0.943	hydrocarbon-rich phase
25.00	298.15	0.034	0.964	0.062	0.930	hydrocarbon-rich phase
25.00	298.15	0.042	0.955	0.076	0.914	hydrocarbon-rich phase
25.00	298.15	0.058	0.941	0.102	0.890	hydrocarbon-rich phase
25.00	298.15	0.069	0.928	0.120	0.865	hydrocarbon-rich phase
25.00	298.15	0.100	0.898	0.170	0.818	hydrocarbon-rich phase
25.00	298.15	0.114	0.880	0.190	0.784	hydrocarbon-rich phase
25.00	298.15	0.164	0.828	0.262	0.705	hydrocarbon-rich phase
25.00	298.15	0.178	0.813	0.279	0.683	hydrocarbon-rich phase
25.00	298.15	0.216	0.770	0.326	0.621	hydrocarbon-rich phase
25.00	298.15	0.228	0.758	0.341	0.605	hydrocarbon-rich phase
25.00	298.15	0.247	0.738	0.364	0.581	hydrocarbon-rich phase
25.00	298.15	0.012	0.988	0.022	0.978	hydrocarbon-rich phase
25.00	298.15	0.021	0.979	0.038	0.959	hydrocarbon-rich phase
25.00	298.15	0.027	0.973	0.049	0.950	hydrocarbon-rich phase
25.00	298.15	0.035	0.963	0.064	0.930	hydrocarbon-rich phase
25.00	298.15	0.036	0.964	0.065	0.935	hydrocarbon-rich phase
25.00	298.15	0.041	0.957	0.074	0.916	hydrocarbon-rich phase
25.00	298.15	0.059	0.940	0.105	0.892	hydrocarbon-rich phase
25.00	298.15	0.125	0.871	0.208	0.775	hydrocarbon-rich phase
25.00	298.15	0.158	0.835	0.254	0.718	hydrocarbon-rich phase
25.00	298.15	0.010	0.989	0.019	0.978	hydrocarbon-rich phase
25.00	298.15	0.018	0.981	0.034	0.965	hydrocarbon-rich phase
25.00	298.15	0.020	0.980	0.036	0.964	hydrocarbon-rich phase
25.00	298.15	0.025	0.975	0.046	0.953	hydrocarbon-rich phase
25.00	298.15	0.031	0.969	0.057	0.943	hydrocarbon-rich phase
25.00	298.15	0.035	0.965	0.063	0.934	hydrocarbon-rich phase
25.00	298.15	0.043	0.955	0.076	0.912	hydrocarbon-rich phase
25.00	298.15	0.102	0.895	0.173	0.814	hydrocarbon-rich phase
25.00	298.15	0.122	0.874	0.203	0.779	hydrocarbon-rich phase
25.00	298.15	0.154	0.840	0.249	0.725	hydrocarbon-rich phase
25.00	298.15	0.013	0.987	0.024	0.974	hydrocarbon-rich phase
25.00	298.15	0.016	0.984	0.029	0.971	hydrocarbon-rich phase
25.00	298.15	0.021	0.979	0.039	0.961	hydrocarbon-rich phase
25.00	298.15	0.022	0.978	0.041	0.959	hydrocarbon-rich phase
25.00	298.15	0.025	0.975	0.046	0.954	hydrocarbon-rich phase
25.00	298.15	0.035	0.965	0.064	0.936	hydrocarbon-rich phase
25.00	298.15	0.103	0.894	0.176	0.813	hydrocarbon-rich phase
25.00	298.15	0.122	0.874	0.204	0.779	hydrocarbon-rich phase
25.00	298.15	0.008	0.990	0.015	0.975	hydrocarbon-rich phase
25.00	298.15	0.011	0.988	0.020	0.975	hydrocarbon-rich phase
25.00	298.15	0.012	0.987	0.023	0.975	hydrocarbon-rich phase
25.00	298.15	0.017	0.983	0.031	0.969	hydrocarbon-rich phase
25.00	298.15	0.031	0.966	0.056	0.932	hydrocarbon-rich phase
25.00	298.15	0.051	0.948	0.091	0.904	hydrocarbon-rich phase
25.00	298.15	0.088	0.910	0.151	0.839	hydrocarbon-rich phase
25.00	298.15	0.199	0.879	0.200	0.790	hydrocarbon-rich phase
25.00	298.15	0.533	0.003	0.310	0.001	water-rich phase
25.00	298.15	0.599	0.009	0.373	0.003	water-rich phase
25.00	298.15	0.647	0.014	0.425	0.005	water-rich phase
25.00	298.15	0.686	0.019	0.473	0.007	water-rich phase
25.00	298.15	0.712	0.043	0.523	0.017	water-rich phase
25.00	298.15	0.728	0.056	0.556	0.023	water-rich phase
25.00	298.15	0.736	0.096	0.605	0.042	water-rich phase
25.00	298.15	0.731	0.123	0.624	0.056	water-rich phase
25.00	298.15	0.712	0.179	0.655	0.088	water-rich phase
25.00	298.15	0.684	0.225	0.660	0.116	water-rich phase
25.00	298.15	0.656	0.266	0.659	0.143	water-rich phase
25.00	298.15	0.599	0.341	0.641	0.195	water-rich phase
25.00	298.15	0.569	0.375	0.624	0.220	water-rich phase
25.00	298.15	0.532	0.421	0.607	0.257	water-rich phase
25.00	298.15	0.517	0.439	0.599	0.272	water-rich phase
25.00	298.15	0.555	0.003	0.329	0.001	water-rich phase
25.00	298.15	0.668	0.017	0.450	0.006	water-rich phase
25.00	298.15	0.711	0.031	0.513	0.012	water-rich phase
25.00	298.15	0.735	0.047	0.558	0.019	water-rich phase
25.00	298.15	0.736	0.058	0.569	0.024	water-rich phase
25.00	298.15	0.746	0.079	0.603	0.034	water-rich phase
25.00	298.15	0.742	0.123	0.644	0.057	water-rich phase
25.00	298.15	0.677	0.246	0.674	0.131	water-rich phase
25.00	298.15	0.607	0.337	0.653	0.194	water-rich phase
25.00	298.15	0.574	0.003	0.346	0.001	water-rich phase
25.00	298.15	0.674	0.017	0.457	0.006	water-rich phase
25.00	298.15	0.714	0.029	0.515	0.011	water-rich phase
25.00	298.15	0.737	0.044	0.559	0.018	water-rich phase
25.00	298.15	0.749	0.059	0.589	0.025	water-rich phase
25.00	298.15	0.754	0.065	0.603	0.028	water-rich phase
25.00	298.15	0.760	0.095	0.643	0.043	water-rich phase
25.00	298.15	0.699	0.244	0.668	0.118	water-rich phase
25.00	298.15	0.651	0.288	0.677	0.160	water-rich phase
25.00	298.15	0.602	0.349	0.658	0.204	water-rich phase
25.00	298.15	0.676	0.011	0.456	0.004	water-rich phase
25.00	298.15	0.715	0.029	0.516	0.011	water-rich phase
25.00	298.15	0.740	0.040	0.559	0.016	water-rich phase
25.00	298.15	0.748	0.046	0.576	0.019	water-rich phase
25.00	298.15	0.758	0.061	0.605	0.026	water-rich phase
25.00	298.15	0.764	0.091	0.646	0.041	water-rich phase
25.00	298.15	0.674	0.264	0.692	0.145	water-rich phase
25.00	298.15	0.650	0.297	0.688	0.168	water-rich phase
25.00	298.15	0.638	0.006	0.411	0.002	water-rich phase
25.00	298.15	0.689	0.016	0.475	0.006	water-rich phase
25.00	298.15	0.713	0.026	0.512	0.010	water-rich phase
25.00	298.15	0.743	0.037	0.561	0.015	water-rich phase
25.00	298.15	0.773	0.080	0.649	0.036	water-rich phase
25.00	298.15	0.756	0.144	0.695	0.071	water-rich phase
25.00	298.15	0.704	0.233	0.711	0.126	water-rich phase
25.00	298.15	0.648	0.304	0.695	0.174	water-rich phase

Method/Apparatus/Procedure:
   The experimental apparatus consisted of a high-pressure equilibrium cell, two hand operated pumps, a pressure exchanger, and two pressure gauges. The equilibrium cell, a stainless-steel cylinder of 50 cm³ capacity, with mechanical stirrer was immersed in a thermostat. The mixture, prepared by mass, were stirred under the desired conditions for at least 8 h and then allowed to settle for 2 h. Samples of each layer were withdrawn for glc  analysis (glass column, 3.2 mm I.d., 150 cm long, packed with PEG-6000 Shimalite F; T/K=343; thermal-conductivity detector equipped with electronic intergrator). Acetone was used as an inert standard. Compositions were determined from the peak-area ratio and the calibration curve. Analysis of each phase were done at least twice.

Source and Purity of Materials:
   (1) Source not specified; dried by refluxing with CaO, followed by the Lund-Bjerrum magnesium method, distilled.
   (2) Source not specified; shaken with conc. H₂SO₄, neutralized with aq. NaOH, dried over CaCI₂, distilled.
   (3) De-ionized, distilled over KMnO₄, redistilled.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Temp. ±0.002 K (control of the thermostat); press. ±0.1 Mpa; composition ±0.003 mass fraction.

---

Distributed by the Office of Data and Informatics of the National Institute of Standards and Technology (NIST) Material Measurement Laboratory (MML).
Website is owned by NIST (an agency of the U.S. Department of Commerce)

---

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