IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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

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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-Decanol ; C10H22O; [112-30-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Francis, A. W.; J. Phys. Chem. 60, 20 (1956).

Variables:
   Temperature = 272 K to 299 K

Prepared By:
   V. P. Sazonov

Experimental Data:   (Notes on the Nomenclature)
  

Table 1. Mutual solubility of nitromethane, 1,2-ethanediol and 1-decanol

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1 (compiler)	Mole Fraction x2 (compiler)
-1.0 (a,c)	272.2	0.180	0.500	0.226	0.618
0.0	273.2	0.100	0.420	0.143	0.592
0.0	273.2	0.150	0.760	0.161	0.802
0.0	273.2	0.150	0.400	0.209	0.549
0.0	273.2	0.160(c)	0.520	0.201	0.643
0.0	273.2	0.185	0.635	0.210	0.711
0.0	273.2	0.230	0.650	0.251	0.698
10.0	283.2	0.090	0.410	0.131	0.588
10.0	283.2	0.110	0.820	0.117	0.855
10.0	283.2	0.120(c)	0.560	0.151	0.693
10.0	283.2	0.130	0.71	0.146	0.785
10.0	283.2	0.170	0.340	0.245	0.482
10.0	283.2	0.275	0.645	0.292	0.675
10.0	283.2	0.925	0.645	0.943	0.045
20.0	293.2	0.070	0.430	0.102	0.617
20.0	293.2	0.080	0.850	0.085	0.887
20.0	293.2	0.100(c)	0.580	0.126	0.719
20.0	293.2	0.100	0.100	0.197	0.194
20.0	293.2	0.120	0.750	0.132	0.813
20.0	293.2	0.200	0.280	0.296	0.407
20.0	293.2	0.355	0.525	0.387	0.563
20.0	293.2	0.820	0.130	0.848	0.132
23.4	296.6	0.050	0.490	0.070	0.679
23.4	296.6	0.070	0.850	0.075	0.892
23.4	296.6	0.085(c)	0.600	0.107	0.741
23.4	296.6	0.105	0.745	0.117	0.818
23.4	296.6	0.240	0.260	0.349	0.371
23.4	296.6	0.350	0.590	0.367	0.609
23.4	296.6	0.400	0.400	0.460	0.452
23.4	296.6	0.450	0.450	0.483	0.475
23.4	296.6	0.610(d)	0.280	0.657	0.297
23.4	296.6	0.750	0.180	0.786	0.186
23.4	296.6	0.780	0.140	0.822	0.145
26.0	299.2	0.043	0.507	0.060	0.697
26.0	299.2	0.060	0.880	0.063	0.912
26.0	299.2	0.075(c)	0.615	0.094	0.757
26.0	299.2	0.090	0.710	0.104	0.807
26.0	299.2	0.095	0.785	0.104	0.845
26.0	299.2	0.240	0.210	0.364	0.314
26.0	299.2	0.360	0.340	0.444	0.413
26.0	299.2	0.400	0.550	0.417	0.563
26.0	299.2	0.500	0.440	0.523	0.453
26.0	299.2	0.590(c)	0.265	0.651	0.287
26.0	299.2	0.610(c)	0.325	0.639	0.335
26.0	299.2	0.750	0.200	0.776	0.204
26.0	299.2	0.760	0.150	0.807	0.156

Table 2. Compositions of three coexisting phases

t/°C	T/K	Mass Fraction w1	Mass Fraction w2	Mole Fraction x1	Mole Fraction x2	Comment(s)
0.0	273.2	0.960	0.020	0.972	0.020	nitromethane-rich phase
0.0	273.2	0.010	0.280	0.018	0.492	nitromethane-rich phase
0.0	273.2	0.065	0.115	0.143	0.248	ethanediol-rich      phase
0.0	273.2	0.010	0.940	0.011	0.969	ethanediol-rich      phase
0.0	273.2	0.000	0.000	0.000	0.000	solid phase
0.0	273.2	0.000	0.000	0.000	0.000	solid phase

Notes:
   Table 1  ^a  Subcol temperature. A subcol is a point in a ternary system where a third binodal curve meets by its plait point with an isotherm of a ridge.
   Table 1  ^b  Quadruple point temperature. The equilibrium of three liquid phases and crystals of alcohol.
   Table 1  ^c  Plait point of binodal curve.
   Table 1  ^d  Col. A col is a point in a ternary system where two separate binodal curves meet at their respective plait points.

Method/Apparatus/Procedure:
   The synthetic method was used. Observations were made after vigorous shaking in glass stoppered tubes (15mL capacity) immersed in water baths in large Dewar flasks. Temperature was adjusted by adding small amounts of cooler or warmer water. Filling started with 5 mL of one reagent followed by small additions of the other two, usually alternately, to maintain a trace of lower or upper layer, until the composition of a plait point was reached or the tube was full.

Source and Purity of Materials:
   (1) Eastman Kodak Co.; distilled with 30 cm column with reflux; b. p. = 101.25 °C; m. p. = -30.5 °C , n(20 °C, D) = 1.3820,r(25 °C) = 1129.8 g · L^-1.
   (2) Source not specified; purified by crystallization; m. p. = -13.3 °C; n(20 °C, D) = 1.4315, ρ(25 °C) = 1110.1 g·L^-1.
   (3) Source not specified; purified by crystallization; m. p. = 6.8 °C; n(20 °C, D) = 1.4372; ρ(20 °C) = 831.8 g·L^-1.

Estimated Errors:

   Temperature: Not specified.

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