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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitromethane with 1,2-Ethanediol and 1-Dodecanol
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-Dodecanol; C12H26O; [112-53-8]
NIST Chemistry WebBook
for detail
Original Measurements:
Francis, A. W.; J. Phys. Chem. 60, 20 (1956).
Variables:
Temperature = 289 K to 302 K
Prepared By:
V. P. Sazonov
Experimental Data:
(Notes on the Nomenclature)
Table 1. Mutual solubility of nitromethane, 1,2-ethanediol and 1-dodecanol
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
22.0
295.2
0.250
0.720
0.258
0.732
28.0
301.2
0.275 (a)
0.445
0.342
0.544
28.0
301.2
0.200
0.770
0.207
0.783
28.0
301.2
0.285
0.535
0.327
0.605
28.0
301.2
0.160
0.340
0.243
0.508
28.0
301.2
0.150
0.160
0.281
0.295
29.0
302.2
0.800
0.150
0.830
0.153
29.0
302.2
0.750
0.210
0.773
0.213
29.0
302.2
0.610(b)
0.330
0.639
0.340
29.0
302.2
0.600
0.320
0.638
0.334
29.0
302.2
0.500
0.410
0.536
0.432
29.0
302.2
0.420
0.530
0.439
0.544
29.0
302.2
0.400
0.460
0.445
0.504
29.0
302.2
0.315(b)
0.405
0.391
0.495
29.0
302.2
0.285
0.565
0.320
0.624
29.0
302.2
0.265(b)
0.465
0.327
0.564
29.0
302.2
0.250
0.700
0.262
0.721
29.0
302.2
0.200
0.250
0.319
0.393
29.0
302.2
0.200
0.770
0.207
0.783
29.0
302.2
0.155
0.345
0.235
0.516
Table 2. Compositions of equilibrium two and three liquid phases
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
Mole Fraction x
2
Comment(s)
16.0 (c)
289.2
0.925
0.050
0.942
0.050
nitromethane-rich phase
22.0
295.2
0.870
0.090
0.895
0.091
nitromethane-rich phase
28.0
301.2
0.710
0.220
0.748
0.228
nitromethane-rich phase
28.5 (d)
301.7
0.600
0.330
0.633
0.343
nitromethane-rich phase
16.0 (c)
289.2
0.280
0.690
0.289
0.701
ethanediol-rich phase
22.0
295.2
0.330
0.610
0.348
0.632
ethanediol-rich phase
28.0
301.2
0.420
0.460
0.461
0.496
ethanediol-rich phase
28.5 (d)
301.7
-
-
-
-
ethanediol-rich phase
16.0 (c)
289.2
0.120
0.240
0.212
0.417
alcohol-rich phase
22.0
295.2
0.150
0.280
0.245
0.45
alcohol-rich phase
28.0
301.2
0.250
0.350
0.345
0.475
alcohol-rich phase
28.5 (d)
301.7
0.250
0.350
0.345
0.475
alcohol-rich phase
Notes:
Table 2
a
Col. A col is a point in a ternary system where two separate binodal curves meet at their respective plait points.
Table 2
b
Plait point of binodal curve.
Table 2
c
Quadruple point temperature. The equilibrium of three liquid phases and crystals of alcohol.
Table 2
d
Subcol tie line. 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.
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,ρ(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. = 22.7 °C;
n
(20 °C, D) = 1.4372; ρ(20 °C) = 831.8 g•L
-1
.
Estimated Errors:
Temperature: Not specified.