Solubility System: Nitroethane with Octane (Original Report)

Variables:
Temperature: 273 K - 314 K
Experimental Data:
Table 1
T (°C)T (K)w1 x1
0273.15 5.8 x 10-20.086
4.20277.35 5.9 x 10-20.087
6.50279.65 6.5 x 10-20.096
10.70283.85 7.6 x 10-20.111
14.2a287.35 8.57 x 10-20.125
14.85288.00 9.0 x 10-20.131
16.85290.00 9.9 x 10-20.143
18.40291.5510.5 x 10-20.151
20.80293.9511.5 x 10-20.165
21.60a294.15--
23.3a296.4512.3 x 10-20.176
26.0a299.15--
28.3a301.4515.49 x 10-20.218
32.8a305.95--
34.6a307.7521.37 x 10-20.293
39.5a312.6530.88 x 10-20.405
39.6a312.75--
41.3a314.4549.01 x 10-20.594
41.3314.45--
Table 2
T (°C)T (K)w1 x1
0273.1591.0 x 10-20.939
4.20277.3590.8 x 10-20.938
6.50279.6590.3 x 10-20.934
10.70283.8589.3 x 10-20.927
14.2a287.35--
14.85288.0087.7 x 10-20.916
16.85290.0086.8 x 10-20.909
18.40291.5586.3 x 10-20.906
20.80293.9585.0 x 10-20.896
21.60a294.1585.0 x 10-20.896
23.3a296.45--
26.0a299.1582.35 x 10-20.877
28.3a301.45--
32.8a305.9576.86 x 10-20.835
34.6a307.75--
39.5a312.65--
39.6a312.7565.08 x 10-20.739
41.3a314.45--
41.3314.45-- (UCST)

a) Obtained by synthetic method. All other data obtained by the analytical method.

Method/Apparatus/Procedure:

The synthetic method and analytical methods were used as described in Vold and Vold.1 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. The temperature of the bath was controlled to ± 0.05 K.

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.

Estimated Errors

Temperature: to ±0.1 K (synthetic method).
Solubility: Composition: ±0.5 mass% (analytical method).

References:

(1) R. D. Vold and M. J. Vold, Physical Methods of Organic Chemistry, Vol. 1 (Interscience, New York, 1945).

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