IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: 2-Propanol with Benzene 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) Benzene; C6H6; [71-43-2]  NIST Chemistry WebBook for detail

Original Measurements:
   Udovenko, V.V.; Mazanko, T.E., Zh. Fiz. Khim. 38, 2984 (1964).

Variables:
   Temperature = 292 K - 343 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)
18.92	292.07	0.1647	0.0018	0.0559	0.0005
25.18	298.33	0.1646	0.0027	0.0559	0.0007
35.88	309.03	0.1643	0.0041	0.0559	0.0011
45.15	318.30	0.1642	0.0051	0.0559	0.0013
56.00	329.15	0.1639	0.0064	0.0558	0.0017
64.72	337.87	0.1638	0.0074	0.0558	0.0019
19.80	292.95	0.2912	0.0131	0.1111	0.0038
28.85	302.00	0.2898	0.0179	0.1109	0.0053
39.86	313.01	0.2884	0.0228	0.1108	0.0067
51.86	324.81	0.2867	0.0285	0.1106	0.0085
69.39	342.54	0.2841	0.0373	0.1103	0.0111
21.95	295.10	0.4199	0.0829	0.1960	0.0298
27.98	301.13	0.4176	0.0880	0.1956	0.0317
41.00	314.15	0.4131	0.0979	0.1949	0.0355
51.12	324.27	0.4111	0.1023	0.1946	0.0372
57.51	330.66	0.4084	0.1081	0.1941	0.0395
66.70	339.85	0.4063	0.1126	0.1937	0.0413
20.81	293.96	0.4861	0.1831	0.2809	0.0814
30.83	303.98	0.4834	0.1876	0.2802	0.0837
46.39	319.54	0.4803	0.1928	0.2794	0.0863
62.42	335.57	0.4768	0.1986	0.2784	0.0892
68.55	341.70	0.4742	0.2030	0.2778	0.0915
22.00	295.15	0.1511	0.8364	0.1807	0.7695
34.20	307.35	0.1509	0.8352	0.1797	0.7651
48.13	321.28	0.1507	0.8343	0.1789	0.7618
57.35	330.50	0.1505	0.8334	0.1780	0.7584
68.78	341.93	0.1504	0.8328	0.1775	0.7563
19.72	292.87	0.2659	0.6980	0.2880	0.5816
30.70	303.85	0.2656	0.6971	0.2867	0.5790
41.50	314.65	0.2653	0.6964	0.2856	0.5768
50.45	323.60	0.2650	0.6954	0.2843	0.5740
65.37	338.52	0.2643	0.6938	0.2818	0.5691
19.90	293.05	0.4115	0.4889	0.3675	0.3359
35.10	308.25	0.4101	0.4872	0.3637	0.3324
42.90	316.05	0.4095	0.4866	0.3622	0.3312
50.88	324.03	0.4085	0.4853	0.3596	0.3286
60.41	333.56	0.4073	0.4840	0.3566	0.3260
19.20	292.35	0.4893	0.3237	0.3592	0.1828
28.25	301.40	0.4876	0.3226	0.3562	0.1813
43.75	316.90	0.4847	0.3207	0.3511	0.1787
54.51	327.66	0.4823	0.3191	0.3469	0.1766
64.75	337.90	0.4795	0.3172	0.3421	0.1741
19.01	292.16	0.4716	0.1614	0.2591	0.0682
28.25	301.40	0.4655	0.1593	0.2530	0.0666
31.93	305.08	0.4612	0.1578	0.2488	0.0655
41.49	314.64	0.4545	0.1556	0.2424	0.0639
49.80	322.95	0.4474	0.1531	0.2357	0.0621
63.60	336.75	0.4398	0.1505	0.2288	0.0602

Compositions of coexisting phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)	Comment(s)
30	303.2	0.004	0.995	0.0052	0.9905	hydrocarbon-rich phase
30	303.2	0.017	0.982	0.0219	0.9738	hydrocarbon-rich phase
30	303.2	0.052	0.946	0.0661	0.9254	hydrocarbon-rich phase
30	303.2	0.106	0.886	0.1302	0.8371	hydrocarbon-rich phase
30	303.2	0.189	0.793	0.2200	0.7101	hydrocarbon-rich phase
30	303.2	0.292	0.660	0.3042	0.5290	hydrocarbon-rich phase
30	303.2	0.382	0.530	0.3526	0.3764	hydrocarbon-rich phase
30	303.2	0.423	0.462	0.3640	0.3059	hydrocarbon-rich phase
30	303.2	0.454	0.407	0.3689	0.2544	hydrocarbon-rich phase
30	303.2	0.476	0.354	0.3619	0.2070	hydrocarbon-rich phase
30	303.2	0.487	0.320	0.3537	0.1788	hydrocarbon-rich phase
30	303.2	0.499	0.292	0.3512	0.1581	hydrocarbon-rich phase
30	303.2	0.502	0.245	0.3272	0.1228	hydrocarbon-rich phase
30	303.2	0.498	0.206	0.3029	0.0964	hydrocarbon-rich phase
30	303.2	0.464	0.152	0.2492	0.0628	hydrocarbon-rich phase
30	303.2	0.447	0.118	0.2248	0.0456	hydrocarbon-rich phase
30	303.2	0.047	0.001	0.0146	0.0002	water-rich phase
30	303.2	0.091	0.003	0.0292	0.0007	water-rich phase
30	303.2	0.146	0.004	0.0489	0.0010	water-rich phase
30	303.2	0.187	0.008	0.0650	0.0021	water-rich phase
30	303.2	0.213	0.010	0.0757	0.0027	water-rich phase
30	303.2	0.245	0.012	0.0897	0.0034	water-rich phase
30	303.2	0.270	0.017	0.1014	0.0049	water-rich phase
30	303.2	0.293	0.023	0.1130	0.0068	water-rich phase
30	303.2	0.300	0.024	0.1166	0.0072	water-rich phase
30	303.2	0.313	0.029	0.1237	0.0088	water-rich phase
30	303.2	0.323	0.030	0.1290	0.0092	water-rich phase
30	303.2	0.344	0.040	0.1416	0.0127	water-rich phase
30	303.2	0.356	0.047	0.1494	0.0152	water-rich phase
30	303.2	0.379	0.060	0.1650	0.0201	water-rich phase
30	303.2	0.424	0.094	0.2015	0.0344	water-rich phase
30	303.2	0.447	0.118 (a)	0.2248	0.0456	water-rich phase
45	318.2	0.016	0.003	0.0206	0.9709	hydrocarbon-rich phase
45	318.2	0.042	0.004	0.0534	0.9339	hydrocarbon-rich phase
45	318.2	0.092	0.005	0.1134	0.8537	hydrocarbon-rich phase
45	318.2	0.156	0.010	0.1860	0.7623	hydrocarbon-rich phase
45	318.2	0.230	0.011	0.2557	0.6330	hydrocarbon-rich phase
45	318.2	0.300	0.012	0.3103	0.5172	hydrocarbon-rich phase
45	318.2	0.365	0.016	0.3431	0.3999	hydrocarbon-rich phase
45	318.2	0.415	0.020	0.3601	0.3157	hydrocarbon-rich phase
45	318.2	0.457	0.027	0.3606	0.2367	hydrocarbon-rich phase
45	318.2	0.480	0.034	0.3543	0.1902	hydrocarbon-rich phase
45	318.2	0.490	0.047	0.3386	0.1542	hydrocarbon-rich phase
45	318.2	0.489	0.057	0.3100	0.1170	hydrocarbon-rich phase
45	318.2	0.486	0.065	0.2961	0.1022	hydrocarbon-rich phase
45	318.2	0.459	0.097	0.2447	0.0619	hydrocarbon-rich phase
45	318.2	0.437	0.124 (a)	0.2188	0.0478	hydrocarbon-rich phase
45	318.2	0.035	0.003	0.0108	0.0007	water-rich phase
45	318.2	0.070	0.004	0.0221	0.0010	water-rich phase
45	318.2	0.123	0.005	0.0405	0.0013	water-rich phase
45	318.2	0.160	0.010	0.0545	0.0026	water-rich phase
45	318.2	0.190	0.011	0.0663	0.0030	water-rich phase
45	318.2	0.208	0.012	0.0738	0.0033	water-rich phase
45	318.2	0.233	0.016	0.0847	0.0045	water-rich phase
45	318.2	0.256	0.020	0.0953	0.0057	water-rich phase
45	318.2	0.280	0.027	0.1072	0.0080	water-rich phase
45	318.2	0.300	0.034	0.1177	0.0103	water-rich phase
45	318.2	0.323	0.047	0.1313	0.0147	water-rich phase
45	318.2	0.347	0.057	0.1459	0.0184	water-rich phase
45	318.2	0.360	0.065	0.1546	0.0215	water-rich phase
45	318.2	0.406	0.097	0.1898	0.0349	water-rich phase
45	318.2	0.437	0.124 (a)	0.2188	0.0478	water-rich phase
60	333.2	0.018	0.980	0.0231	0.9683	hydrocarbon-rich phase
60	333.2	0.046	0.950	0.0582	0.9249	hydrocarbon-rich phase
60	333.2	0.100	0.890	0.1222	0.8370	hydrocarbon-rich phase
60	333.2	0.170	0.810	0.1977	0.7247	hydrocarbon-rich phase
60	333.2	0.216	0.759	0.2445	0.6611	hydrocarbon-rich phase
60	333.2	0.302	0.645	0.3097	0.5089	hydrocarbon-rich phase
60	333.2	0.393	0.510	0.3544	0.3538	hydrocarbon-rich phase
60	333.2	0.435	0.430	0.3577	0.2720	hydrocarbon-rich phase
60	333.2	0.472	0.345	0.3502	0.1969	hydrocarbon-rich phase
60	333.2	0.485	0.290	0.3325	0.1530	hydrocarbon-rich phase
60	333.2	0.485	0.255	0.3132	0.1267	hydrocarbon-rich phase
60	333.2	0.480	0.212	0.2873	0.0976	hydrocarbon-rich phase
60	333.2	0.460	0.170	0.2520	0.0717	hydrocarbon-rich phase
60	333.2	0.411	0.113	0.1970	0.0417	hydrocarbon-rich phase
60	333.2	0.027	0.003	0.0083	0.0007	water-rich phase
60	333.2	0.069	0.006	0.0218	0.0015	water-rich phase
60	333.2	0.114	0.007	0.0374	0.0018	water-rich phase
60	333.2	0.140	0.009	0.0469	0.0023	water-rich phase
60	333.2	0.160	0.010	0.0545	0.0026	water-rich phase
60	333.2	0.180	0.011	0.0623	0.0029	water-rich phase
60	333.2	0.206	0.015	0.0731	0.0041	water-rich phase
60	333.2	0.226	0.019	0.0819	0.0053	water-rich phase
60	333.2	0.264	0.027	0.0996	0.0078	water-rich phase
60	333.2	0.282	0.034	0.1089	0.0101	water-rich phase
60	333.2	0.312	0.045	0.1252	0.0139	water-rich phase
60	333.2	0.324	0.051	0.1323	0.0160	water-rich phase
60	333.2	0.355	0.068	0.1522	0.0224	water-rich phase
60	333.2	0.411	0.113 (a)	0.1970	0.0417	water-rich phase

Notes:
   ^a  Critical point of solubility.

Method/Apparatus/Procedure:
   Solubility was measured by the Alekseev's method.¹ Five solubility-temperature curves of constant alcohol-benzene ratio and another four curves of constant alcohol-water ratio were measured. These were used to construct solubility isotherms. Phase equilibrium was determined by comparison of density and refractive index on calibration curves obtained for saturation. Critical points of solubility by the Alekseev's method.²

Source and Purity of Materials:
   (1) Source not specified; b.p.=81.4°C at 750 Torr, d(30°C,4°C)=0.7971, n(25°C,D)=1.3749.
   (2) Source not specified; purified; b.p.=79.0°C at 752.5 Torr, d(30°C,4°C)=0.8680, n(25°C,D)=1.4980; taken from Ref. 3.
   (3) Source not specified.

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

References:
   ¹ V. F. Alekseev, Gornyi Zh. 4, 83 (1879).
   ² V. F. Alekseev, Gornyi Zh. 2, 385 (1885).
   ³ V. V. Udovenko and T. F. Mazanko, Zh. Fiz. Khim. 37, 1151 (1963).

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