IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Nitromethane with 1,2-Ethanediol and 1-Heptanol

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Components:
   (1) Nitromethane; CH3NO2 ; [75-52-5]  NIST Chemistry WebBook for detail
   (2) 1,2-Ethanediol; C2H6O2 ; [107-21-1]  NIST Chemistry WebBook for detail
   (3) 1-Heptanol ; C7H16O; [111-70-6]  NIST Chemistry WebBook for detail

Original Measurements:
   Zhuravleva, I. K.; Zh. Obshch. Khim. 55, 1685-9 (1985).

Variables:
   Temperature = 275 K to 307 K

Prepared By:
   V. P. Sazonov

Experimental Remarks:

   The solubility temperatures of liquid phases were determined in ternary mixtures with a constant mass relationship of (2) and (3), respectively, 15.0:85.0, 30.0:70.0, 45.0:55.0, 60.0:40.0, 75.0:25.0, and 90.0:10.0.

The composition of two coexistent liquid phases at 19 °C are also presented in graphical form.

Experimental Data:   (Notes on the Nomenclature)
  

Solubility temperatures of the liquid phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
2.0	275.2	0.074	0.139	0.119	0.219
5.0	278.2	0.903	0.015	0.940	0.015
7.0	280.2	0.897	0.016	0.936	0.016
11.0	284.2	0.140	0.129	0.215	0.195
14.0	287.2	0.859	0.021	0.911	0.022
18.0	291.2	0.194	0.121	0.288	0.177
20.0	293.2	0.825	0.026	0.888	0.028
23.0	296.2	0.813	0.028	0.880	0.030
25.0	298.2	0.798	0.030	0.869	0.032
25.0	298.2	0.269	0.110	0.382	0.154
28.5	301.7	0.305	0.104	0.425	0.142
29.0	302.2	0.765	0.035	0.846	0.038
31.5	304.7	0.717	0.042	0.810	0.047
31.5	304.7	0.391	0.091	0.520	0.119
32.0	305.2	0.420	0.087	0.549	0.112
33.0	306.2	0.516	0.073	0.642	0.089
33.0	306.2	0.659	0.051	0.765	0.058
33.0	306.2	0.553	0.067	0.676	0.080
3.5	276.7	0.100	0.270	0.144	0.381
8.5	281.7	0.152	0.254	0.213	0.350
9.0	282.2	0.867	0.040	0.908	0.041
11.5	284.7	0.191	0.243	0.263	0.328
14.0	287.2	0.831	0.051	0.881	0.053
15.0	288.2	0.239	0.228	0.322	0.301
17.0	290.2	0.815	0.055	0.869	0.058
20.5	293.7	0.334	0.200	0.431	0.254
22.0	295.2	0.784	0.065	0.846	0.069
23.0	296.2	0.381	0.186	0.481	0.231
24.0	297.2	0.423	0.173	0.525	0.211
25.0	298.2	0.695	0.092	0.775	0.100
25.5	298.7	0.635	0.110	0.724	0.123
25.5	298.7	0.493	0.152	0.595	0.180
25.5	298.7	0.562	0.131	0.659	0.152
10.0	283.2	0.850	0.068	0.886	0.069
12.0	285.2	0.839	0.072	0.877	0.074
12.0	285.2	0.298	0.316	0.367	0.383
16.5	289.7	0.368	0.284	0.443	0.337
18.0	291.2	0.797	0.091	0.843	0.095
19.0	292.2	0.778	0.100	0.827	0.105
19.0	292.2	0.424	0.259	0.502	0.301
20.0	293.2	0.456	0.245	0.534	0.282
20.0	293.2	0.744	0.115	0.799	0.121
21.0	294.2	0.701	0.134	0.762	0.144
21.0	294.2	0.497	0.226	0.575	0.257
21.0	294.2	0.550	0.202	0.626	0.226
21.0	294.2	0.649	0.158	0.717	0.171
6.5	279.7	0.850	0.090	0.876	0.091
10.0	283.2	0.300	0.420	0.349	0.480
11.0	284.2	0.838	0.097	0.866	0.099
13.0	286.2	0.825	0.105	0.855	0.107
13.0	286.2	0.357	0.386	0.410	0.435
15.0	288.2	0.790	0.126	0.825	0.129
16.0	289.2	0.474	0.316	0.530	0.347
17.0	290.2	0.502	0.299	0.557	0.327
17.0	290.2	0.760	0.144	0.798	0.149
17.5	290.7	0.531	0.281	0.586	0.305
18.0	291.2	0.605	0.237	0.657	0.253
18.0	291.2	0.725	0.165	0.767	0.172
18.0	291.2	0.683	0.190	0.729	0.200
4.0	277.2	0.960	0.030	0.965	0.030
6.0	279.2	0.250	0.563	0.277	0.614
8.0	281.2	0.300	0.525	0.330	0.569
13.0	286.2	0.355	0.484	0.388	0.520
16.0	289.2	0.417	0.437	0.452	0.465
17.0	290.2	0.475	0.394	0.510	0.416
17.0	290.2	0.930	0.053	0.939	0.052
19.0	292.2	0.925	0.056	0.934	0.056
20.0	293.2	0.547	0.340	0.581	0.355
21.0	294.2	0.582	0.313	0.616	0.326
22.0	295.2	0.905	0.071	0.916	0.071
23.0	296.2	0.653	0.260	0.684	0.268
25.0	298.2	0.738	0.196	0.764	0.200
25.0	298.2	0.871	0.097	0.886	0.097
26.5	299.7	0.792	0.156	0.814	0.158
27.0	300.2	0.856	0.108	0.873	0.108
27.0	300.2	0.813	0.140	0.834	0.141
28.0	301.2	0.832	0.126	0.851	0.127
2.0	275.2	0.213	0.708	0.224	0.732
9.0	282.2	0.950	0.045	0.953	0.044
11.5	284.7	0.295	0.634	0.309	0.652
15.0	288.2	0.941	0.053	0.945	0.052
17.0	290.2	0.348	0.587	0.363	0.602
21.5	294.7	0.404	0.536	0.420	0.548
24.0	297.2	0.911	0.080	0.916	0.079
26.5	299.7	0.542	0.412	0.558	0.417
27.0	300.2	0.898	0.092	0.904	0.091
28.0	301.2	0.598	0.362	0.613	0.365
30.0	303.2	0.667	0.300	0.681	0.301
30.5	303.7	0.716	0.256	0.729	0.256
31.5	304.7	0.756	0.219	0.768	0.219
33.0	306.2	0.800	0.180	0.810	0.179
34.0	307.2	0.873	0.114	0.880	0.113

Notes:

Method/Apparatus/Procedure:
   Two methods were used. The solubility temperatures of liquid phases were determined by the synthetic method (Alekseev¹). The analytical method described in Nikurashina and Mertslin² was used for determining equilibrium liquid phase compositions. Samples from coexisting liquid phases at equilibrium were analyzed by refractometry. No experimental details given.

Source and Purity of Materials:
   (1) Source not specified; purity not specified; n(20 °C, D) = 1.3820, d(20 °C, 4 °C) = 1.1320.
   (2) Source not specified; purity not specified; n(20 °C, D) = 1.4315, d(20 °C, 4 °C) = 1.1155.
   (3) Source not specified; purity not specified; n(20 °C, D) = 1.4240; d(20 °C, 4 °C) = 0.8220.

Estimated Errors:

   Temperature: Not specified.

References:
   ¹V. F. Alekseev, Zh. Russ. Fiz.-Khim. Ova 8, 249(1876).
   ²N. I. Nikurashina and R. V. Mertslin, Method of Secants (in Russian), Saratov University, 1969.

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