IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Nitromethane with Diiodomethane and Cyclohexane

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Components:
   (1) Diiodomethane; CH2I2; [75-11-6]  NIST Chemistry WebBook for detail
   (2) Nitromethane; CH3NO2 ; [75-52-5]  NIST Chemistry WebBook for detail
   (3) Cyclohexane; C6H12; [110-82-7]  NIST Chemistry WebBook for detail

Original Measurements:
   Sazonov, V. P.; Zhilyaeva, I. N. and Gudkina, L. V.; Zh. Prikl. Khim. (Leningrad) 48, 1953-7 (1975).

Variables:
   Temperature = 283 K to 317 K

Prepared By:
   V. P. Sazonov and N. V Sazonov

Experimental Remarks:

   The temperatures of phase transitions were determined in ternary mixtures with a constant mass content of (1), respectively, 20.0, 30.0, 40.0, and 50.0 mass %, and also in ternary mixtures with a constant mass relationship of (2) and (3) as 67.5:32.5, 72.5:27.5, and 80.0:20.0, respectively. L₁ nitromethane-rich phase; L₂ diiodomethane-rich phase; L₃ cyclohexane-rich phase. The phase which is being dissolved is indicated in the table.

Experimental Data:   (Notes on the Nomenclature)
  

Table 1. Solubility temperatures of the three liquid phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
9.48 (L3)	282.60	0.200	0.680	0.452	0.351
10.63 (L2)	283.78	0.200	0.500	0.376	0.215
10.78 (L2)	283.90	0.200	0.520	0.383	0.227
10.82 (L3)	283.97	0.200	0.660	0.442	0.333
11.43 (L2)	284.58	0.200	0.540	0.391	0.240
11.52 (L3)	284.77	0.200	0.640	0.433	0.316
11.71 (L2)	284.86	0.200	0.560	0.399	0.254
11.82 (L3)	284.97	0.200	0.620	0.424	0.299
11.92 (a)	285.07	0.200	0.580	0.407	0.269
11.97 (a)	285.12	0.200	0.600	0.415	0.284
9.77 (L3)	282.92	0.300	0.595	0.586	0.265
10.48 (L2)	283.63	0.300	0.472	0.524	0.188
11.19 (L3)	284.34	0.300	0.577	0.576	0.253
11.21 (L2)	284.36	0.300	0.490	0.532	0.198
11.64 (L2)	284.79	0.300	0.508	0.540	0.208
11.75 (L3)	284.90	0.300	0.560	0.567	0.241
11.84 (a)	284.99	0.300	0.525	0.549	0.219
11.90 (a)	285.05	0.300	0.543	0.558	0.230
9.43 (L2)	282.58	0.400	0.420	0.639	0.153
10.28 (L3)	283.43	0.400	0.510	0.688	0.200
10.62 (L2)	283.77	0.400	0.435	0.646	0.160
11.43 (L2)	284.58	0.400	0.450	0.654	0.168
11.56 (L3)	284.71	0.400	0.495	0.679	0.192
11.85 (a)	285.00	0.400	0.465	0.662	0.176
11.92 (a)	285.07	0.400	0.480	0.671	0.183
9.52 (L2)	282.67	0.500	0.388	0.746	0.132
11.02 (L2)	284.17	0.500	0.400	0.753	0.137
11.32 (L3)	284.47	0.500	0.425	0.768	0.149
11.88 (a)	285.03	0.500	0.412	0.760	0.143
11.52 (L2)	284.67	0.0662	0.6303	0.1540	0.3341
11.67 (L2)	284.82	0.0746	0.6709	0.1811	0.3710
11.67 (L2)	284.82	0.0890	0.6605	0.2113	0.3574
10.71 (L3)	283.86	0.1213	0.7030	0.2966	0.3918
11.28 (L3)	284.43	0.0867	0.7306	0.2248	0.4317

Table 2. Solubility temperatures of the two liquid phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
20.54	293.69	0.200	0.700	0.463	0.369
21.13	294.28	0.200	0.680	0.452	0.351
21.44	294.59	0.200	0.720	0.474	0.389
22.83	295.98	0.200	0.660	0.442	0.333
24.85	298.00	0.200	0.640	0.433	0.316
27.71	300.86	0.200	0.620	0.424	0.299
29.98	303.13	0.200	0.760	0.497	0.431
30.58	303.73	0.200	0.600	0.415	0.284
33.87	307.02	0.200	0.580	0.407	0.269
36.74	309.89	0.200	0.560	0.399	0.254
39.96	313.11	0.200	0.540	0.391	0.240
42.57	315.72	0.200	0.520	0.383	0.227
43.96	317.11	0.200	0.500	0.376	0.215
21.02	294.17	0.300	0.613	0.596	0.278
21.98	295.13	0.300	0.595	0.586	0.265
22.13	295.28	0.300	0.630	0.607	0.290
25.34	298.49	0.300	0.577	0.576	0.253
29.83	302.98	0.300	0.560	0.567	0.241
31.97	305.12	0.300	0.665	0.629	0.318
33.98	307.13	0.300	0.543	0.558	0.230
38.03	311.18	0.300	0.525	0.549	0.219
19.74	292.89	0.400	0.525	0.697	0.208
21.48	294.63	0.400	0.540	0.706	0.217
21.97	295.12	0.400	0.510	0.688	0.200
25.77	298.92	0.400	0.570	0.725	0.236
27.66	300.81	0.400	0.495	0.679	0.192
33.17	306.32	0.400	0.480	0.671	0.183
37.93	311.08	0.400	0.465	0.662	0.176
15.93	289.08	0.500	0.438	0.775	0.155
17.67	290.82	0.500	0.450	0.783	0.160
20.62	293.77	0.500	0.425	0.768	0.149
26.05	299.20	0.500	0.475	0.798	0.173
27.21	300.36	0.500	0.412	0.760	0.143
33.18	306.33	0.500	0.400	0.753	0.137
38.27	311.42	0.500	0.388	0.746	0.132
11.17	284.32	0.0600	0.6345	0.1408	0.3393
11.31	284.46	0.0640	0.6318	0.1493	0.3359
11.44	284.59	0.0503	0.6410	0.1197	0.3476
12.23	285.38	0.0450	0.6446	0.1079	0.3523
13.45	286.60	0.0372	0.6499	0.0902	0.3593
16.32	289.47	0.0268	0.6569	0.0660	0.3688
20.68	293.83	0.0122	0.6668	0.0307	0.3828
11.48 (a)	284.63	0.0593	0.6820	0.1474	0.3863
11.51 (a)	284.66	0.0624	0.6798	0.1543	0.3832
11.59 (a)	284.74	0.0652	0.6777	0.1605	0.3803
11.78 (a)	284.93	0.0555	0.6848	0.1388	0.3902
13.82 (a)	286.97	0.0461	0.6916	0.1170	0.4001
14.47 (a)	287.62	0.0366	0.6985	0.0943	0.4104
17.32	290.47	0.0257	0.7064	0.0674	0.4226
21.06	294.21	0.0129	0.7156	0.0346	0.4373
24.43	297.58	0.0056	0.7209	0.0152	0.4461
11.16	284.31	0.0788	0.7370	0.2072	0.4416
11.25	284.40	0.0822	0.7342	0.2148	0.4372
11.25	284.40	0.0742	0.7406	0.1967	0.4473
11.28	284.43	0.0680	0.7456	0.1822	0.4555
11.87	285.02	0.0604	0.7517	0.1641	0.4655
12.66	285.81	0.0532	0.7574	0.1465	0.4753
13.02	286.17	0.0497	0.7602	0.1377	0.4802
24.62	297.77	0.0113	0.7910	0.0337	0.5382
26.12	299.27	0.0053	0.7958	0.0160	0.5481

Table 3. Mutual solubility nitromethane, diiodomethane and cyclohexane

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
11.0	284.15	0.017	0.561	0.038	0.283
11.0	284.15	0.042	0.575	0.093	0.291
11.0	284.15	0.050	0.617	0.116	0.325
11.0	284.15	0.060	0.611	0.137	0.318
11.0	284.15	0.027	0.864	0.089	0.650
11.0	284.15	0.058	0.801	0.169	0.533
11.0	284.15	0.074	0.741	0.196	0.448
11.0	284.15	0.086	0.731	0.223	0.432
11.0	284.15	0.063	0.609	0.143	0.316
11.0	284.15	0.071	0.627	0.164	0.330
11.0	284.15	0.073	0.649	0.173	0.350
11.0	284.15	0.081	0.666	0.194	0.365
11.0	284.15	0.089	0.729	0.230	0.429
11.0	284.15	0.107	0.583	0.229	0.284
11.0	284.15	0.228	0.521	0.431	0.225
11.0	284.15	0.306	0.486	0.539	0.195
11.0	284.15	0.365	0.460	0.611	0.176
11.0	284.15	0.415	0.439	0.668	0.161
11.0	284.15	0.459	0.419	0.714	0.149
11.0	284.15	0.554	0.379	0.804	0.125
11.0	284.15	0.073	0.880	0.237	0.652
11.0	284.15	0.093	0.771	0.253	0.478
11.0	284.15	0.657	0.326	0.883	0.100
11.0	284.15	0.051	0.446	0.099	0.196

Notes:
   Table 1  ^a  Critical opalescence.
   Table 2  ^a  Critical opalescence.

Method/Apparatus/Procedure:
   The synthetic method and titration method were used. The apparatus and procedure were described in Zhilyaeva.¹

Source and Purity of Materials:
   (1) Source not specified; pure grade reagent; dried and twice distilled in a glass packed column; n(20 °C, D) = 1.3820, d(20 °C, 4 °C) = 1.1381.
   (2) Source not specified; analytical purity; dried and twice distilled in presence of zinc dust under vacuum; d(20 °C, 4 °C) = 3.3214.
   (3) Source not specified; pure grade reagent; dried and twice distilled.

Estimated Errors:

   Temperature: ± 0.01 K.

References:
   ¹I. N. Zhilyaeva, Dissertation, Novosibirsk Institute of Inorganic Chemistry, 1972.

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