IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitroethane with Nitromethane, 1,2-Ethanediol, 1-Dodecanol and Water

Components:
   (1) 1,2-Ethanediol; C2H6O2 ; [107-21-1]  NIST Chemistry WebBook for detail
   (2) 1-Dodecanol; C12H26O; [112-53-8]  NIST Chemistry WebBook for detail
   (3) Nitroethane; C2H5NO2; [79-24-3]  NIST Chemistry WebBook for detail
   (4) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail
   (5) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Das, B.K.; Griffiths, R.B., J. Chem. Phys. 70, 5555-66 (1979).

Variables:
   Temperature = 311 K to 315 K

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

Experimental Remarks:

   The usual order of the four phases in the sample tube. L₁ - upper liquid phase, L₂ - second from the top liquid phase, L₃ - second from the bottom liquid phase, L₄ - lower liquid phase.

Experimental Data:   (Notes on the Nomenclature)

Compositions of the four equilibrium liquid phases
t/°C	T/K	10² * Mass Fraction w₁	10² * Mass Fraction w₂	10² * Mass Fraction w₃	10² * Mass Fraction w₄	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)	Mole Fraction x₃ (compiler)	Mole Fraction x₄ (compiler)	Comment(s)
37.58	310.73	31.4	4.3	32.0	29.4	0.362	0.040	0.363	0.110	Phase = L1
37.58	310.73	31.5	3.9	41.6	18.5	0.326	0.033	0.424	0.063	L2
37.58	310.73	56.9	7.4	21.1	12.6	0.602	0.064	0.219	0.044	L3
37.58	310.73	30.3	3.8	48.1	12.7	0.297	0.030	0.463	0.041	L4
37.92	311.07	30.5	4.4	30.6	31.8	0.364	0.043	0.359	0.124	L1
37.92	311.07	45.9	6.4	30.0	15.0	0.487	0.055	0.313	0.052	L2
37.92	311.07	55.4	7.2	22.5	12.7	0.585	0.062	0.233	0.044	L3
37.92	311.07	29.5	3.6	50.0	11.3	0.284	0.028	0.473	0.036	L4
38.55	311.70	33.7	3.9	26.8	32.4	0.398	0.037	0.311	0.125	L1
38.55	311.70	34.9	3.7	34.9	22.0	0.369	0.032	0.362	0.076	L2
38.55	311.70	63.3	6.9	18.8	8.4	0.640	0.057	0.187	0.028	L3
38.55	311.70	33.2	3.4	48.6	8.3	0.306	0.025	0.441	0.025	L4
38.84	311.99	28.0	3.9	27.4	37.7	0.346	0.039	0.333	0.153	L1
38.84	311.99	35.9	4.6	33.2	22.7	0.391	0.041	0.355	0.081	L2
38.84	311.99	54.7	6.6	22.8	13.3	0.572	0.056	0.234	0.046	L3
38.84	311.99	27.5	2.8	54.4	8.6	0.253	0.021	0.492	0.026	L4
39.01	312.16	33.8	2.9	30.2	29.2	0.383	0.027	0.336	0.108	L1
39.01	312.16	37.0	2.8	39.3	15.5	0.367	0.023	0.383	0.050	L2
39.01	312.16	61.1	5.1	20.2	11.0	0.627	0.043	0.204	0.037	L3
39.01	312.16	34.6	2.5	46.9	9.3	0.320	0.019	0.426	0.028	L4
39.26	312.41	32.2	2.7	31.5	29.5	0.362	0.025	0.348	0.109	L1
39.26	312.41	33.9	2.6	36.5	22.4	0.359	0.022	0.380	0.078	L2
39.26	312.41	58.4	4.6	21.1	13.1	0.604	0.039	0.215	0.044	L3
39.26	312.41	32.0	2.5	49.0	10.2	0.299	0.019	0.451	0.031	L4
39.39	312.54	32.4	4.1	27.9	33.1	0.391	0.040	0.331	0.131	L1
39.39	312.54	40.9	4.8	29.2	22.2	0.451	0.043	0.317	0.080	L2
39.39	312.54	53.7	6.0	23.4	14.5	0.570	0.052	0.244	0.050	L3
39.39	312.54	28.9	2.7	54.5	6.9	0.260	0.020	0.483	0.020	L4
39.40	312.55	37.2	3.7	31.8	23.4	0.404	0.033	0.340	0.083	L1
39.40	312.55	37.0	3.6	35.6	19.4	0.383	0.030	0.363	0.066	L2
39.40	312.55	55.8	5.5	22.1	13.9	0.583	0.047	0.227	0.048	L3
39.40	312.55	29.4	2.5	53.9	7.0	0.265	0.018	0.477	0.021	L4
39.50	312.65	36.3	3.6	26.7	30.0	0.420	0.033	0.304	0.114	L1
39.50	312.65	38.2	3.6	33.3	20.6	0.401	0.031	0.344	0.071	L2
39.50	312.65	58.0	5.6	21.1	12.6	0.603	0.047	0.216	0.043	L3
39.50	312.65	30.2	2.3	53.8	6.2	0.269	0.017	0.471	0.018	L4
39.76	312.91	26.7	2.5	25.0	42.4	0.339	0.026	0.312	0.176	L1
39.76	312.91	35.5	3.0	37.0	19.6	0.365	0.025	0.374	0.066	L2
39.76	312.91	55.2	4.5	22.5	14.7	0.575	0.038	0.231	0.050	L3
39.76	312.91	29.7	2.5	45.7	15.6	0.285	0.020	0.432	0.049	L4
39.97	313.12	30.8	2.3	25.3	38.3	0.377	0.023	0.305	0.154	L1
39.97	313.12	38.4	2.5	38.8	14.7	0.374	0.020	0.371	0.047	L2
39.97	313.12	60.4	3.9	21.2	11.5	0.614	0.032	0.212	0.038	L3
39.97	313.12	36.4	2.3	44.2	9.9	0.333	0.017	0.397	0.030	L4
40.02	313.17	31.2	2.6	46.4	25.8	0.342	0.023	0.393	0.093	L1
40.02	313.17	35.9	2.8	36.0	19.8	0.364	0.023	0.359	0.066	L2
40.02	313.17	54.2	4.2	25.6	13.0	0.556	0.035	0.258	0.044	L3
40.02	313.17	29.7	2.0	53.1	6.9	0.261	0.014	0.460	0.020	L4
40.08	313.23	20.2	1.5	27.2	45.0	0.269	0.016	0.402	0.196	L1
40.08	313.23	44.6	2.1	37.3	17.4	0.452	0.017	0.311	0.058	L2
40.08	313.23	52.3	2.5	22.4	13.9	0.528	0.021	0.272	0.046	L3
40.08	313.23	31.7	1.5	50.0	5.1	0.274	0.011	0.452	0.014	L4
40.15	313.30	32.1	2.2	24.3	35.2	0.384	0.021	0.320	0.138	L1
40.15	313.30	40.7	2.3	36.0	14.5	0.399	0.018	0.360	0.047	L2
40.15	313.30	59.2	3.6	22.1	11.6	0.601	0.030	0.224	0.039	L3
40.15	313.30	32.8	1.6	40.0	8.2	0.295	0.012	0.443	0.024	L4
40.28	313.43	31.5	2.2	30.7	38.4	0.384	0.022	0.292	0.153	L1
40.28	313.43	41.1	2.5	31.2	15.3	0.408	0.020	0.351	0.050	L2
40.28	313.43	59.2	4.0	27.4	11.5	0.601	0.033	0.221	0.038	L3
40.28	313.43	42.3	2.7	53.1	9.1	0.396	0.021	0.368	0.028	L4
40.54	313.69	31.4	3.0	29.3	32.0	0.358	0.028	0.329	0.120	L1
40.54	313.69	39.7	3.5	31.3	20.5	0.411	0.029	0.319	0.069	L2
40.54	313.69	50.7	4.4	26.7	14.5	0.520	0.037	0.269	0.049	L3
40.54	313.69	26.8	2.0	57.0	4.5	0.226	0.014	0.472	0.012	L4
40.78	313.93	33.3	2.5	30.6	30.3	0.385	0.023	0.348	0.115	L1
40.78	313.93	42.0	2.7	31.2	19.7	0.435	0.023	0.318	0.067	L2
40.78	313.93	51.5	3.4	28.3	13.5	0.525	0.028	0.284	0.045	L3
40.78	313.93	26.7	1.4	58.0	5.4	0.231	0.010	0.494	0.015	L4
40.85	314.00	33.5	2.2	27.4	33.2	0.391	0.021	0.315	0.127	L1
40.85	314.00	43.2	2.5	31.6	18.0	0.440	0.021	0.317	0.060	L2
40.85	314.00	53.6	3.0	25.4	14.4	0.545	0.025	0.254	0.048	L3
40.85	314.00	34.3	1.7	49.9	6.4	0.304	0.012	0.435	0.019	L4
41.00	314.15	29.7	0.2	24.5	41.5	0.365	0.002	0.296	0.167	L1
41.00	314.15	46.0	0.5	34.6	12.7	0.436	0.004	0.322	0.039	L2
41.00	314.15	56.2	0.7	25.8	12.8	0.553	0.006	0.250	0.041	L3
41.00	314.15	39.2	0.3	43.4	8.8	0.348	0.002	0.378	0.026	L4
41.13	314.28	31.5	2.3	24.2	37.8	0.376	0.022	0.284	0.148	L1
41.13	314.28	37.2	2.5	30.9	24.3	0.392	0.021	0.320	0.084	L2
41.13	314.28	46.1	3.2	26.0	20.4	0.483	0.027	0.268	0.070	L3
41.13	314.28	27.5	1.7	56.8	4.6	0.233	0.012	0.473	0.013	L4
41.17	314.32	29.7	0.2	24.1	41.7	0.363	0.002	0.290	0.167	L1
41.17	314.32	47.4	0.6	28.8	17.9	0.474	0.005	0.283	0.059	L2
41.17	314.32	51.8	0.6	28.1	14.4	0.510	0.005	0.272	0.046	L3
41.17	314.32	37.3	0.1	45.4	8.8	0.330	0.001	0.395	0.026	L4
41.29	314.44	31.7	0.5	25.1	39.3	0.390	0.005	0.304	0.159	L1
41.29	314.44	47.0	0.7	32.3	15.3	0.467	0.006	0.316	0.050	L2
41.29	314.44	53.3	0.8	27.7	13.8	0.532	0.006	0.272	0.045	L3
41.29	314.44	40.1	0.4	44.2	8.2	0.361	0.003	0.392	0.024	L4
41.68	314.83	36.9	2.7	25.3	30.6	0.415	0.025	0.280	0.113	L1
41.68	314.83	39.3	3.0	26.1	27.1	0.429	0.027	0.280	0.097	L2
41.68	314.83	43.8	3.2	27.7	20.4	0.452	0.027	0.281	0.069	L3
41.68	314.83	26.2	1.5	57.8	4.2	0.217	0.010	0.472	0.011	L4

Method/Apparatus/Procedure:
   The analytical method was used. The liquid mixture was placed in a glass tube 12.5 cm long with an inside diameter of 1.4 cm. The total mass of the sample was 8 to 10 g. The tube was closed with a Bakelite screw cap. The entire tube was mounted vertically and submerged in a water bath. After every change in temperature the sample was vigorously stirred several times using a Teflon-coated magnetic stirrer inside the tube. It was then necessary to wait from a few hours to a day for the different liquid phases to segregate into layers. Samples, typically 0.1 mL, of the different phases were removed using a syringe with a stainless steel needle. The syringe was first, if necessary, heated uniformly to a temperature (typically 50°C) above that of the bath to prevent phase separation in the liquid. Analyses of the compositions of four coexisting phases were determined using gas chromatography.

Source and Purity of Materials:
   (1) Fisher Chemicals; reagent grade.
   (2) Aldrich Chemicals; reagent grade.
   (3) Bauer Chemicals; reagent grade; contained some water. (4) Eastman Chemicals; reagent grade. (5) Distilled; impurity less than 0.4 mass %.

Estimated Errors:
   Solubility: Compostition: relative error less than 5%.
   Temperature: ±0.01 K.