IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with 1,2,3-Propanetriol and 1-Heptanol

Components:
   (1) 1,2,3-Propanetriol; C3H8O3; [56-81-5]  NIST Chemistry WebBook for detail
   (2) Nitromethane; CH3NO2 ; [75-52-5]  NIST Chemistry WebBook for detail
   (3) 1-Heptanol ; C7H16O; [111-70-6]  NIST Chemistry WebBook for detail

Original Measurements:
   Sazonov, V. P. and Zhilyaeva, I. N.; Zh. Fiz. Khim. 45, 733-4 (1971). *Deposited Doc., VINITI 2410 (1970).

Variables:
   Temperature = 288 K to 316 K

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

Experimental Remarks:

   The temperatures of phase transitions were determined in ternary mixtures with a constant mass content of (2), respectively, 2.5, 5.0, 7.5, 10.0, 20.0, 40.0, and 70.0 mass % and also in ternary mixtures with constant mass relationship of (1) and (3) as 40.0: 60.0, 55.0:45.0, and 70.0:30.0, respectively. L₁ nitromethane-rich phase; L₂ propanetriol-rich phase; L₃ alcohol-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)
24.70 (L3)	297.85	0.878	0.025	0.929	0.017
32.20 (L3)	305.35	0.829	0.025	0.899	0.018
24.65 (L3)	297.80	0.855	0.050	0.912	0.035
32.25 (L3)	305.40	0.807	0.050	0.882	0.036
36.05 (L3)	309.20	0.760	0.050	0.851	0.037
38.47 (L3)	311.62	0.713	0.050	0.819	0.038
39.36 (L3)	312.51	0.665	0.050	0.784	0.039
24.55 (L3)	297.70	0.833	0.075	0.895	0.053
32.23 (L3)	305.38	0.786	0.075	0.865	0.055
36.07 (L3)	309.22	0.740	0.075	0.834	0.056
38.45 (L3)	311.60	0.694	0.075	0.802	0.058
39.32 (L1)	312.47	0.416	0.075	0.567	0.068
39.37 (L3)	312.52	0.647	0.075	0.768	0.059
39.66 (L1)	312.81	0.462	0.075	0.612	0.066
39.77 (L1) (a)	312.92	0.509	0.075	0.655	0.064
39.78 (L3)	312.93	0.601	0.075	0.732	0.061
39.82 (a)	312.97	0.555	0.075	0.695	0.062
24.45 (L3)	297.60	0.810	0.100	0.877	0.072
32.25 (L3)	305.40	0.765	0.100	0.848	0.073
34.81 (L1)	307.96	0.270	0.100	0.405	0.099
36.04 (L3)	309.19	0.720	0.100	0.818	0.075
36.87 (L1)	310.02	0.315	0.100	0.458	0.096
38.24 (L1)	311.39	0.360	0.100	0.507	0.093
38.46 (L3)	311.61	0.675	0.100	0.785	0.077
39.35 (L3)	312.50	0.630	0.100	0.752	0.079
39.35 (L1)	312.50	0.405	0.100	0.554	0.091
39.56 (L1)	312.71	0.450	0.100	0.598	0.088
39.72 (L3)	312.87	0.585	0.100	0.716	0.081
39.77 (L1)	312.92	0.495	0.100	0.639	0.086
39.82 (a)	312.97	0.540	0.100	0.679	0.083
17.60 (L1)	290.75	0.120	0.200	0.197	0.217
24.25 (L3)	287.40	0.720	0.200	0.805	0.148
25.25 (L1)	298.40	0.160	0.200	0.254	0.211
30.62 (L1)	303.77	0.200	0.200	0.309	0.205
32.27 (L3)	305.42	0.680	0.200	0.777	0.151
33.94 (L1)	307.09	0.240	0.200	0.360	0.199
36.00 (L3)	309.15	0.640	0.200	0.747	0.155
36.45 (L1)	309.60	0.280	0.200	0.408	0.193
37.96 (L1)	311.11	0.320	0.200	0.454	0.188
38.14 (L1)	311.29	0.360	0.200	0.498	0.183
38.44 (L3)	311.59	0.600	0.200	0.716	0.158
39.40 (L3)	312.55	0.560	0.200	0.684	0.162
39.52 (L1)	312.67	0.400	0.200	0.539	0.178
39.75 (L3)	312.90	0.520	0.200	0.650	0.166
39.77 (L1)	312.92	0.440	0.200	0.578	0.174
39.80 (L1)	312.95	0.480	0.200	0.615	0.170
39.82 (a)	312.97	0.500	0.200	0.633	0.168
14.40 (L1)	287.55	0.090	0.400	0.145	0.425
22.20 (L1)	295.35	0.120	0.400	0.188	0.416
23.95 (L3)	297.10	0.540	0.400	0.645	0.317
28.25 (L1)	301.40	0.150	0.400	0.230	0.407
32.01 (L3)	305.16	0.510	0.400	0.620	0.322
32.71 (L1)	305.86	0.180	0.400	0.270	0.398
35.75 (L1)	308.90	0.210	0.400	0.309	0.390
35.80 (L3)	308.95	0.480	0.400	0.594	0.328
37.65 (L1)	310.80	0.240	0.400	0.346	0.382
38.39 (L3)	311.54	0.450	0.400	0.567	0.334
38.84 (L1)	311.99	0.270	0.400	0.381	0.374
39.34 (L3)	312.49	0.420	0.400	0.539	0.340
39.52 (L1)	312.67	0.300	0.400	0.415	0.367
39.72 (L1)	312.87	0.330	0.400	0.448	0.360
39.77 (L3)	312.92	0.390	0.400	0.510	0.346
39.78 (L1)	312.93	0.360	0.400	0.479	0.353
39.82 (a)	312.97	0.375	0.400	0.494	0.350
21.60 (L3)	294.75	0.270	0.700	0.360	0.619
24.31 (L1)	297.46	0.075	0.700	0.114	0.706
30.37 (L1)	303.52	0.090	0.700	0.136	0.698
31.30 (L3)	304.45	0.255	0.700	0.343	0.625
34.55 (L1)	307.70	0.105	0.700	0.156	0.691
35.55 (L3)	308.70	0.240	0.700	0.326	0.631
36.47 (L1)	309.62	0.120	0.700	0.177	0.684
37.93 (L1)	311.08	0.135	0.700	0.197	0.677
38.32 (L3)	311.47	0.225	0.700	0.309	0.637
39.27 (L3)	312.42	0.210	0.700	0.291	0.643
39.64 (L1)	312.79	0.165	0.700	0.236	0.663
39.75 (L1)	312.90	0.180	0.700	0.255	0.656
39.78 (L3)	312.93	0.202	0.700	0.282	0.647
39.82 (a)	312.97	0.195	0.700	0.273	0.650
39.35 (L3)	312.50	0.651	0.070	0.771	0.055
39.35 (L3)	312.50	0.658	0.060	0.778	0.047
39.35 (L3)	312.50	0.665	0.050	0.784	0.039
39.77 (L1)	312.92	0.509	0.075	0.655	0.064
39.77 (L1)	312.92	0.514	0.065	0.661	0.055
39.77 (L1)	312.92	0.520	0.055	0.667	0.047
38.30 (L1)	311.45	0.364	0.090	0.512	0.084
38.35 (L1)	311.50	0.366	0.085	0.515	0.079
38.42 (L1)	311.57	0.368	0.080	0.518	0.075

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)
23.75	296.90	0.146	0.025	0.244	0.028
30.85	304.00	0.195	0.025	0.314	0.027
35.15	308.30	0.244	0.025	0.379	0.026
36.15	309.30	0.780	0.025	0.868	0.018
38.17	311.32	0.292	0.025	0.438	0.025
38.55	311.70	0.731	0.025	0.835	0.019
39.87	313.02	0.341	0.025	0.494	0.024
40.15	313.30	0.683	0.025	0.801	0.019
40.75	313.90	0.390	0.025	0.546	0.023
40.82	313.97	0.634	0.025	0.764	0.020
40.97	314.12	0.585	0.025	0.725	0.021
41.17	314.32	0.439	0.025	0.596	0.022
41.22	314.37	0.487	0.025	0.641	0.022
41.27 (a)	314.42	0.536	0.025	0.685	0.021
21.81	294.96	0.143	0.050	0.238	0.055
29.35	302.50	0.190	0.050	0.305	0.053
34.25	307.40	0.237	0.050	0.368	0.051
36.67	309.82	0.285	0.050	0.427	0.050
38.41	311.56	0.332	0.050	0.481	0.048
39.55	312.70	0.380	0.050	0.533	0.047
39.87	313.02	0.617	0.050	0.748	0.040
40.05	313.20	0.427	0.050	0.581	0.045
40.07	313.22	0.570	0.050	0.710	0.041
40.17	313.32	0.475	0.050	0.627	0.044
40.22 (a)	313.37	0.522	0.050	0.669	0.043
19.77	292.92	0.139	0.075	0.231	0.083
27.25	300.40	0.185	0.075	0.297	0.080
32.45	305.60	0.231	0.075	0.358	0.077
35.71	308.86	0.277	0.075	0.415	0.075
37.45	310.60	0.324	0.075	0.470	0.072
38.67	311.82	0.370	0.075	0.520	0.070
18.45	291.60	0.135	0.100	0.224	0.110
26.35	299.50	0.180	0.100	0.288	0.106
31.62	304.77	0.225	0.100	0.348	0.103
39.40	312.55	0.669	0.045	0.788	0.035
39.47	312.62	0.672	0.040	0.791	0.031
39.65	312.80	0.676	0.035	0.794	0.027
39.85	313.00	0.679	0.030	0.797	0.023
40.15	313.30	0.683	0.025	0.801	0.019
40.35	313.50	0.686	0.020	0.804	0.015
40.70	313.85	0.690	0.015	0.807	0.012
41.05	314.20	0.693	0.010	0.810	0.008
41.37	314.52	0.697	0.005	0.813	0.004
40.02	313.17	0.523	0.050	0.670	0.043
40.22	313.37	0.525	0.045	0.673	0.038
40.47	313.62	0.528	0.040	0.676	0.034
40.71	313.86	0.531	0.035	0.679	0.030
40.92	314.07	0.534	0.030	0.682	0.025
41.17	314.32	0.536	0.025	0.684	0.021
41.45	314.60	0.539	0.020	0.688	0.017
41.77	314.92	0.542	0.015	0.691	0.013
42.12	315.27	0.545	0.010	0.694	0.008
42.52	315.67	0.547	0.005	0.696	0.004
38.62	311.77	0.370	0.075	0.520	0.070
38.77	311.92	0.372	0.070	0.523	0.065
38.92	312.07	0.374	0.065	0.526	0.060
39.12	312.27	0.376	0.060	0.528	0.056
39.26	312.41	0.378	0.055	0.531	0.051
39.46	312.61	0.380	0.050	0.533	0.047
39.67	312.82	0.382	0.045	0.536	0.042
39.87	313.02	0.384	0.040	0.539	0.037
40.12	313.27	0.386	0.035	0.541	0.033
40.42	313.57	0.388	0.030	0.544	0.028
40.72	313.87	0.390	0.025	0.546	0.023
41.02	314.17	0.392	0.020	0.549	0.019
41.27	314.42	0.394	0.015	0.551	0.014
41.55	314.70	0.396	0.010	0.554	0.009
41.92	315.07	0.398	0.005	0.557	0.005

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

Method/Apparatus/Procedure:
   The synthetic method (Alekseev¹) was used. Mixtures of (1), (2) and (3) of total mass 10g were heated with vigorous stirring to a temperature higher than the homogenization temperature, then slowly cooled until turbidity appeared. Heating and cooling cycles were repeated twice. Temperature values obtained for appearing and disappearing turbidity were averaged.

Source and Purity of Materials:
   (1) Source not specified; pure grade reagent; dried and twice distilled in glass packed column.
   (2) Source not specified, analytical purity; twice distilled at vacuum; 0.03 mass % of water by the Karl Fischer analysis.
   (3) source not specified, pure grade reagent; dried and twice distilled at vacuum.

Estimated Errors:

   Temperature: ± 0.02 K.

References:
   ¹V. F. Alekseev, Zh. Russ. Fiz.-Khim. Ova 8, 249(1876).