IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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

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) Octanoic acid; C8H16O2; [124-07-2]  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 = 286 K to 307 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, 70.0 mass % and also in ternary mixtures with constant mass relationship of (1) and (3) as 45.0:55.0, 57.5:42.5, and 70.0:30.0, respectively. L₁ nitromethane-rich phase; L₂ propanetriol-rich phase; L₃ acid-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)
19.15 (L3)	292.30	0.8288	0.0250	0.9135	0.0183
19.15 (L3)	292.30	0.8075	0.0500	0.8963	0.0368
23.00 (L3)	296.15	0.7600	0.0500	0.8700	0.0379
24.52 (L3)	297.67	0.7125	0.0500	0.8420	0.0392
25.17 (L3)	298.32	0.6650	0.0500	0.8122	0.0405
25.27 (L3)	298.42	0.6175	0.0500	0.7803	0.0419
19.18 (L3)	292.33	0.7863	0.0750	0.8788	0.0556
23.02 (L3)	296.17	0.7400	0.0750	0.8525	0.0573
23.44 (L1)	296.59	0.4163	0.0750	0.6110	0.0730
24.52 (L3)	297.67	0.6938	0.0750	0.8246	0.0591
24.52 (L1)	297.67	0.4626	0.0750	0.6534	0.0702
25.06 (L1)	298.21	0.5088	0.0750	0.6925	0.0677
25.17 (L3)	298.32	0.6475	0.0750	0.7948	0.0610
25.27 (L3)	298.42	0.5926	0.0750	0.7568	0.0635
25.29 (L3)	298.44	0.5782	0.0750	0.7464	0.0642
25.30 (a)	298.45	0.5550	0.0750	0.7290	0.0653
12.70 (L3)	285.85	0.8102	0.1000	0.8860	0.0725
19.05 (L1)	292.20	0.3149	0.1000	0.5008	0.1054
19.23 (L3)	292.38	0.7649	0.1000	0.8610	0.0746
21.57 (L1)	294.72	0.3599	0.1000	0.5497	0.1012
23.05 (L3)	296.20	0.7199	0.1000	0.8348	0.0768
23.41 (L1)	296.56	0.4050	0.1000	0.5949	0.0974
24.50 (L1)	297.65	0.4499	0.1000	0.6366	0.0938
24.57 (L3)	297.72	0.6750	0.1000	0.8069	0.0792
25.05 (L1)	298.20	0.4949	0.1000	0.6755	0.0905
25.18 (L3)	298.33	0.6300	0.1000	0.7772	0.0818
25.28 (L3)	298.43	0.5851	0.1000	0.7457	0.0845
25.29 (L3)	298.44	0.5627	0.1000	0.7291	0.0859
25.29 (a)	298.44	0.5399	0.1000	0.7117	0.0874
18.95 (L1)	292.10	0.2801	0.2000	0.4427	0.2095
19.31 (L3)	292.46	0.6800	0.2000	0.7876	0.1535
21.37 (L1)	294.52	0.3201	0.2000	0.4881	0.2022
23.07 (L3)	296.22	0.6401	0.2000	0.7617	0.1578
23.28 (L1)	296.43	0.3600	0.2000	0.5304	0.1953
24.45 (L1)	297.60	0.4000	0.2000	0.5699	0.1889
24.61 (L3)	297.76	0.6000	0.2000	0.7342	0.1622
25.00 (L1)	298.15	0.4400	0.2000	0.6070	0.1828
25.22 (L3)	298.37	0.5600	0.2000	0.7052	0.1669
25.28 (L3)	298.43	0.5201	0.2000	0.6745	0.1719
25.29 (a)	298.44	0.5002	0.2000	0.6585	0.1745
25.30 (a)	298.45	0.4800	0.2000	0.6417	0.1772
17.90 (L1)	291.05	0.2100	0.4000	0.3280	0.4141
19.43 (L3)	292.58	0.5097	0.4000	0.6269	0.3261
20.87 (L1)	294.02	0.2400	0.4000	0.3650	0.4032
23.00 (L1)	296.15	0.2699	0.4000	0.4000	0.3929
23.10 (L3)	296.25	0.4801	0.4000	0.6032	0.3331
24.27 (L1)	297.42	0.3001	0.4000	0.4336	0.3830
24.68 (L3)	297.83	0.4500	0.4000	0.5779	0.3405
24.96 (L1)	298.11	0.3301	0.4000	0.4653	0.3737
25.24 (L3)	298.39	0.4201	0.4000	0.5518	0.3482
25.27 (L1)	298.42	0.3600	0.4000	0.4954	0.3648
25.27 (L3)	298.42	0.4048	0.4000	0.5379	0.3523
25.30 (L3)	298.45	0.3900	0.4000	0.5242	0.3563
25.30 (a)	298.45	0.3751	0.4000	0.5100	0.3605
19.48 (L1)	292.63	0.1199	0.7000	0.1816	0.7029
19.55 (L3)	292.70	0.2551	0.7000	0.3456	0.6286
21.97 (L1)	295.12	0.1351	0.7000	0.2020	0.6937
23.15 (L3)	296.30	0.2400	0.7000	0.3290	0.6361
23.58 (L1)	296.73	0.1500	0.7000	0.2214	0.6849
24.73 (L1)	297.88	0.1650	0.7000	0.2405	0.6762
24.75 (L3)	297.90	0.2250	0.7000	0.3122	0.6438
25.15 (L1)	298.30	0.1799	0.7000	0.2590	0.6679
25.26 (L3)	298.41	0.2098	0.7000	0.2947	0.6517
25.30 (a)	298.45	0.1949	0.7000	0.2771	0.6597

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)
14.20	287.35	0.2438	0.0250	0.4278	0.0291
19.85	293.00	0.2925	0.0250	0.4892	0.0277
23.16	296.31	0.7801	0.0250	0.8873	0.0188
23.62	296.77	0.3412	0.0250	0.5450	0.0265
25.61	298.76	0.7313	0.0250	0.8593	0.0195
26.09	299.24	0.3900	0.0250	0.5962	0.0253
26.90	300.05	0.6825	0.0250	0.8294	0.0201
27.27	300.42	0.4387	0.0250	0.6430	0.0243
27.71	300.86	0.6337	0.0250	0.7974	0.0208
28.16	301.31	0.4876	0.0250	0.6863	0.0233
28.21	301.36	0.5850	0.0250	0.7631	0.0216
28.32 (a)	301.47	0.5606	0.0250	0.7449	0.0220
28.33	301.48	0.5363	0.0250	0.7261	0.0224
16.75	289.90	0.2850	0.0500	0.4753	0.0553
20.37	293.52	0.3324	0.0500	0.5302	0.0529
22.83	295.98	0.3800	0.0500	0.5807	0.0506
24.30	297.45	0.4275	0.0500	0.6270	0.0486
25.03	298.18	0.4750	0.0500	0.6698	0.0467
25.38	298.53	0.5225	0.0500	0.7094	0.0450
25.42 (a)	298.57	0.5700	0.0500	0.7461	0.0434
25.50	298.65	0.5463	0.0500	0.7281	0.0442
19.19	292.34	0.3238	0.0750	0.5156	0.0792
21.71	294.86	0.3700	0.0750	0.5652	0.0759
25.31	298.46	0.6746	0.0363	0.8217	0.0293
25.60	298.75	0.6768	0.0331	0.8238	0.0267
26.02	299.17	0.6793	0.0296	0.8263	0.0239
26.57	299.72	0.6816	0.0263	0.8285	0.0212
26.91	300.06	0.6826	0.0249	0.8295	0.0201
27.30	300.45	0.6842	0.0226	0.8311	0.0182
28.25	301.40	0.6868	0.0189	0.8336	0.0152
29.32	302.47	0.6894	0.0151	0.8362	0.0121
30.45	303.60	0.6922	0.0111	0.8389	0.0089
31.58	304.73	0.6948	0.0074	0.8414	0.0059
32.96	306.11	0.6975	0.0036	0.8440	0.0029
25.33	298.48	0.5433	0.0552	0.7246	0.0488
25.39	298.54	0.5442	0.0535	0.7257	0.0473
25.50	298.65	0.5462	0.0501	0.7280	0.0443
25.69	298.84	0.5484	0.0463	0.7306	0.0409
25.91	299.06	0.5504	0.0428	0.7329	0.0378
26.26	299.41	0.5525	0.0391	0.7354	0.0345
26.37	299.52	0.5531	0.0381	0.7361	0.0336
26.73	299.88	0.5549	0.0350	0.7382	0.0309
27.31	300.46	0.5572	0.0310	0.7409	0.0273
27.94	301.09	0.5594	0.0272	0.7435	0.0240
28.56	301.71	0.5615	0.0234	0.7460	0.0206
29.39	302.54	0.5638	0.0195	0.7486	0.0172
30.27	303.42	0.5659	0.0158	0.7511	0.0139
31.34	304.49	0.5684	0.0115	0.7540	0.0101
32.49	305.64	0.5705	0.0078	0.7565	0.0069
33.66	306.81	0.5727	0.0040	0.7590	0.0035
23.55	296.70	0.4206	0.0653	0.6172	0.0635
23.65	296.80	0.4210	0.0644	0.6178	0.0626
23.82	296.97	0.4238	0.0583	0.6217	0.0567
23.93	297.08	0.4244	0.0568	0.6226	0.0552
24.09	297.24	0.4264	0.0524	0.6255	0.0509
24.21	297.36	0.4270	0.0511	0.6263	0.0497
24.77	297.92	0.4306	0.0431	0.6315	0.0419
25.14	298.29	0.4322	0.0395	0.6337	0.0384
25.52	298.67	0.4339	0.0358	0.6361	0.0348
26.60	299.75	0.4371	0.0286	0.6407	0.0278
27.31	300.46	0.4391	0.0242	0.6436	0.0235
28.33	301.48	0.4413	0.0193	0.6467	0.0187
29.41	302.56	0.4434	0.0147	0.6497	0.0143
30.25	303.40	0.4448	0.0116	0.6517	0.0113
31.34	304.49	0.4466	0.0076	0.6542	0.0074
32.42	305.57	0.4483	0.0038	0.6566	0.0037

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).