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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitromethane with 1,2-Dichlorobenzene and Heptane
Components:
(1) Nitromethane; CH3NO2 ; [75-52-5]
NIST Chemistry WebBook
for detail
(2) 1,2-Dichlorobenzene; C6H4Cl2; [95-50-1]
NIST Chemistry WebBook
for detail
(3) Heptane; C7H16; [142-82-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Patel, A. N.; J. Chem. Eng. Data 26, 124-7 (1981).
Variables:
Temperature = 294 K
Prepared By:
V. P. Sazonov
Experimental Data:
(Notes on the Nomenclature)
Table 1. Mutual solubility of nitromethane, 1,2-dichlorobenzene and heptane
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
20.5
293.7
0.062
0.000
0.098
0.000
20.5
293.7
0.060
0.050
0.096
0.033
20.5
293.7
0.056
0.146
0.093
0.101
20.5
293.7
0.061
0.254
0.104
0.181
20.5
293.7
0.099
0.386
0.173
0.280
20.5
293.7
0.164
0.441
0.279
0.312
20.5
293.7
0.229
0.462
0.376
0.315
20.5
293.7
0.348
0.451
0.529
0.285
20.5
293.7
0.500
0.370
0.682
0.210
20.5
293.7
0.690
0.235
0.828
0.117
20.5
293.7
0.750
0.188
0.866
0.090
20.5
293.7
0.855
0.095
0.924
0.043
20.5
293.7
0.900
0.055
0.947
0.024
20.5
293.7
0.957
0.000
0.973
0.000
Table 2. Compositions of equilibrium liquid phases of the ternary system
t/°C
T/K
Mass Fraction w
1
Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
Comment(s)
20.5
293.7
0.932
0.025
0.962
0.011
nitromethane-rich phase
20.5
293.7
0.900
0.055
0.947
0.024
nitromethane-rich phase
20.5
293.7
0.838
0.102
0.914
0.046
nitromethane-rich phase
20.5
293.7
0.755
0.175
0.868
0.083
nitromethane-rich phase
20.5
293.7
0.690
0.231
0.827
0.115
nitromethane-rich phase
20.5
293.7
0.605
0.301
0.768
0.159
nitromethane-rich phase
20.5
293.7
0.059
0.041
0.095
0.027
heptane-rich phase
20.5
293.7
0.059
0.092
0.096
0.062
heptane-rich phase
20.5
293.7
0.055
0.175
0.092
0.122
heptane-rich phase
20.5
293.7
0.075
0.295
0.129
0.211
heptane-rich phase
20.5
293.7
0.091
0.378
0.159
0.275
heptane-rich phase
20.5
293.7
0.150
0.430
0.257
0.305
heptane-rich phase
Method/Apparatus/Procedure:
Two methods were used. The binodal solubility curve was determined by the method of appearance and disappearance of turbidity (Othmer
et al
.
1
). The analytical method was used to determine equilibrium liquid phase compositions. Various mixtures of known composition within the heterogenous region were prepared and brought to equilibrium. Conjugate phases were analyzed by refractive index measurement in conjunction with calibration curve prepared with mixtures of known composition on the solubility curve. Values of composition determined were checked by material-balance calculation.
Source and Purity of Materials:
(1) Source not specified; laboratory grade reagent; not purified.
(2) Source not specified; laboratory grade reagent; not purified.
(3) Source not specified; laboratory grade reagent; not purified.
Estimated Errors:
Temperature: control to ± 0.5 K.
Titer: ± 0.05 mL.
Titer: to 0.1 mg.
References:
1
D. F. Othmer, R. E. White, and E. Trueger, Ind. Eng. Chem. 33, 1240 (1941).