IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Ethanol with Benzene and Water

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Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Benzene; C6H6; [71-43-2]  NIST Chemistry WebBook for detail
   (3) Ethanol (ethyl alcohol); C2H6O; [64-17-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Sidgwick, N.V., Spurrell, W.J., J. Chem. Soc. 117, 1397 (1920).

Variables:
   Temperature = 272 K - 312 K

Prepared By:
   A. Skrzecz

Experimental Data:   (Notes on the Nomenclature)
  

Compositions along the saturation curve

t/°C	T/K	Mass Fraction w1 (compiler)	Mass Fraction w2 (compiler)	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
30.7	303.85	0.0974	0.8918	0.1496	0.8080
26.1	299.25	0.1121	0.8755	0.1698	0.7822
23.9	297.05	0.1182	0.8688	0.1781	0.7719
16.1	289.25	0.1329	0.8524	0.1974	0.7467
11.0	284.15	0.1414	0.8430	0.2084	07328
5.2	278.35	0.1515	0.8318	0.2212	0.7164
2.0	275.15	0.1572	0.8254	0.2283	0.7070
28.3	301.45	0.2245	0.7389	0.2978	0.5781
22.7	295.85	0.2338	0.7281	0.3074	0.5645
17.6	290.75	0.2440	0.7163	0.3177	0.5501
12.9	286.05	0.2550	0.7035	0.3286	0.5346
8.5	281.65	0.2672	0.6893	0.3404	0.5179
4.5	277.65	0.2805	0.6738	0.3529	0.5000
39.2	312.35	0.2922	0.6352	0.3428	0.4395
32.1	305.25	0.3071	0.6166	0.3547	0.4200
19.6	292.75	0.3411	0.5741	0.3805	0.3777
9.2	282.35	0.3961	0.5055	0.4188	0.3152
5.2	278.35	0.4234	0.4714	0.4363	0.2865
1.6	274.75	0.4470	0.4419	0.4507	0.2628
29.5	302.65	0.4139	0.4443	0.3985	0.2523
20.3	293.45	0.4601	0.3823	0.4227	0.2071
15.2	288.35	0.4832	0.3512	0.4338	0.1860
7.75	280.90	0.5138	0.3102	0.4480	0.1595
3.00	276.15	0.5296	0.2890	0.4550	0.1464
-1.25	271.90	0.5434	0.2704	0.4609	0.1353
25.3	298.45	0.4997	0.2767	0.4047	0.1322
21.2	294.35	0.5120	0.2588	0.4094	0.1220
17.3	290.45	0.5229	0.2431	0.4135	0.1134
13.5	286.65	0.5325	0.2291	0.4169	0.1058
9.9	283.05	0.5411	0.2167	0.4200	0.0992
6.5	279.65	0.5488	0.2055	0.4227	0.0934
1.95	275.10	0.5591	0.1906	0.4263	0.0857
15.4	288.55	0.5159	0.1053	0.3336	0.0402
12.15	285.30	0.5187	0.1005	0.3343	0.0382
7.1	280.25	0.5233	0.0925	0.3354	0.0350
2.3	275.45	0.5272	0.0856	0.3363	0.0322
-0.40	272.75	0.5289	0.0827	0.3367	0.0310
25.0	298.15	0.3861	0.0100	0.1994	0.0030
0.0	273.2	0.1612	0.8210	0.2333	0.7008
0.0	273.2	0.4559	0.4308	0.4561	0.2542
0.0	273.2	0.5393	0.2759	0.4592	0.1385
0.0	273.2	0.5631	0.1848	0.4277	0.0828
0.0	273.2	0.5286	0.0832	0.3366	0.0312
1.0	274.2	0.1590	0.8235	0.2305	0.7044
1.0	274.2	0.4510	0.4370	0.4531	0.2590
1.0	274.2	0.5366	0.2795	0.4580	0.1407
1.0	274.2	0.5611	0.1878	0.4270	0.0843
1.0	274.2	0.5279	0.0844	0.3365	0.0317
2.0	275.2	0.1572	0.8255	0.2283	0.7073
2.0	275.2	0.4446	0.4450	0.4493	0.2652
2.0	275.2	0.5328	0.2846	0.4564	0.1438
2.0	275.2	0.5589	0.1910	0.4262	0.0859
2.0	275.2	0.5273	0.0855	0.3363	0.0322
3.0	276.2	0.1553	0.8276	0.2259	0.7103
3.0	276.2	0.4372	0.4542	0.4448	0.2726
3.0	276.2	0.5299	0.2885	0.4551	0.1461
3.0	276.2	0.5564	0.1945	0.4254	0.0877
3.0	276.2	0.5266	0.0868	0.3361	0.0327
4.0	277.2	0.1536	0.8295	0.2238	0.7130
4.0	277.2	0.4311	0.4618	0.4411	0.2787
4.0	277.2	0.5264	0.2932	0.4536	0.1490
4.0	277.2	0.5544	0.1975	0.4247	0.0892
4.0	277.2	0.5258	0.0881	0.3360	0.0332
5.0	278.2	0.1527	0.8305	0.2227	0.7145
5.0	278.2	0.2782	0.6765	0.3508	0.5031
5.0	278.2	0.4252	0.4692	0.4374	0.2847
5.0	278.2	0.5228	0.2981	0.4520	0.1520
5.0	278.2	0.5521	0.2008	0.4239	0.0909
5.0	278.2	0.5250	0.0895	0.3358	0.0338
15.0	288.2	0.1346	0.8505	0.1997	0.7439
15.0	288.2	0.2498	0.7095	0.3235	0.5418
15.0	288.2	0.3604	0.5500	0.3944	0.3550
15.0	288.2	0.4834	0.3510	0.4339	0.1858
15.0	288.2	0.5293	0.2338	0.4158	0.1083
15.0	288.2	0.5162	0.1047	0.3336	0.0399
25.0	298.2	0.1151	0.8722	0.1739	0.7771
25.0	298.2	0.2300	0.7325	0.3036	0.5701
25.0	298.2	0.3251	0.5941	0.3686	0.3972
25.0	298.2	0.4370	0.4132	0.4109	0.2291
25.0	298.2	0.5011	0.2746	0.4052	0.1310
25.0	298.2	0.5039	0.1261	0.3305	0.0488
25.0	298.2	0.3861	0.0100	0.1994	0.0030

Method/Apparatus/Procedure:
   The apparatus consisted of Beckmann tube with air-jacket, thermometer and stirred. Known amount of aqueous alcohol mixture of known composition and benzene were placed in a tube. Aqueous alcohol mixtures were prepared gravimetrically. Components were added from an accurate pipette, which had been carefully graduated by weight. The reported temperatures (the mean of two or three observations) were those at which the liquid  separated into two layers. The results, for the round temperatures, were interpolated by the authors from the curves. Concentrations were reported as alcohol mass concentration in alcohol-water mixture used in the experiment and benzene mass concentration in the solution which became turbid. The temperatures at which  benzene crystallized from the investigated mixtures of known compositions were reported also in the paper.

Source and Purity of Materials:
   (1) Source not specified, ordinary "absolute" alcohol; distilled from lime, water concentration was determined from the density using "last edition of Beilstein's Handbuch der Organische Chemie," 99.5% alcohol was obtained by treatment with anhydrous copp
   (2) Source not specified; freed of thiophene by sulphuric acid, frozen out seven times, distilled over sodium.
   (3) Source not specified.

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

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