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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Nitroethane with 1-Octene and Octane
Components:
(1) 1-Octene; C8H16; [111-66-0]
NIST Chemistry WebBook
for detail
(2) Nitroethane; C2H5NO2; [79-24-3]
NIST Chemistry WebBook
for detail
(3) Octane; C8H18; [111-65-9]
NIST Chemistry WebBook
for detail
Original Measurements:
Hwa, S.C.P.; Techo, R.; Ziegler, W.T., J. Chem. Eng. Data 8, 409-11 (1963).
Variables:
Temperature = 273 K
Prepared By:
V. P. Sazonov
Experimental Data:
(Notes on the Nomenclature)
Mutual solubility of nitroethane (1), 1-octene (2) and octane (3)
t/°C
T/K
10
2
* Mass Fraction w
1
10
2
* Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
0.0
273.2
7.7
20.5
0.112
0.200
0.0
273.2
15.2
57.9
0.212
0.541
0.0
273.2
17.4
59.3
0.240
0.548
0.0
273.2
24.0
60.5
0.321
0.542
0.0
273.2
29.1
60.2
0.381
0.527
0.0
273.2
34.0
58.2
0.436
0.499
0.0
273.2
50.6
44.9
0.605
0.359
0.0
273.2
52.9
43.0
0.627
0.341
0.0
273.2
74.7
20.5
0.816
0.150
0.0
273.2
80.6
13.7
0.862
0.098
0.0
273.2
83.2
10.2
0.882
0.072
Table 2. Composition of the equilibrium liquid phases
t/°C
T/K
10
2
* Mass Fraction w
1
10
2
* Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
Comment(s)
0.0
273.2
88.6
3.1
0.922
0.021
nitroethane-rich phase
0.0
273.2
85.2
7.8
0.897
0.055
nitroethane-rich phase
0.0
273.2
81.2
12.3
0.866
0.088
nitroethane-rich phase
Table 3. Composition of the equilibrium liquid phases
t/°C
T/K
10
2
* Mass Fraction w
1
10
2
* Mass Fraction w
2
Mole Fraction x
1
(compiler)
Mole Fraction x
2
(compiler)
Comment(s)
0.0
273.2
7.9
25.3
0.115
0.246
hydrocarbon-rich phase
0.0
273.2
9.9
38.6
0.142
0.371
hydrocarbon-rich phase
0.0
273.2
12.9
50.3
0.178
0.476
hydrocarbon-rich phase
Method/Apparatus/Procedure:
Two methods were used. The cloud point was determined by titrating a third component into binary samples of known composition in a constant temperature bath. In the given system no distinct change in the transparency of the clear mixture was observed to indicate to the unaided eye that the cloud point had been obtained; only the presence of finely dispersed globules of the second phase, which were visible through a magnifying glass, denoted the fact that the cloud point had been reached. The analytical method consisted of withdrawing a sample from each of the coexisting phases from an equilibrium cell in a constant temperature bath, and analyzing the samples by gas chromatographic techniques (see Tables 1 and 2).
Source and Purity of Materials:
(1) Commercial Solvents Corp.; purity 96 mole % with 3.9 mole % of 2-nitropropane; not purified.
(2) Phillips Petroleum Co.; purity > 99 mole %; not purified.
(3) Phillips Petroleum Co.; purity > 99 mole %; not purified.
Estimated Errors:
Temperature: ±0.05 K.