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Solubility System: Nitroethane with 2,2,4-Trimethylpentane and Octane (Original Report)

Variables:
Temperature: 298 K and 308 K
Prepared By:
Valerii P. Sazonov
Experimental Data:
T (°C)T (K)w1 w2 x1 x2
35.0308.226.2 x 10-223.5 x 1020.3510.207
35.0308.227.0 x 10-225.0 x 1020.360.219
35.0308.240.5 x 10-237.4 x 1020.5090.309
35.0308.256.8 x 10-226.5 x 1020.6670.204
35.0308.259.1 x 10-224.0 x 1020.6870.183
35.0308.271.8 x 10-2 4.5 x 1020.7950.033
T (°C)T (K)w1 w2 x1 x2
25.0298.282.6 x 10-21700.8780.012
25.0298.279.7 x 10-2 8.3 x 1020.8570.059
25.0298.276.4 x 10-215.1 x 1020.8310.108
35.0308.272.1 x 10-24.6 x 1020.7970.033
35.0308.269.9 x 10-2 8.4 x 1020.7790.062
35.0308.263.7 x 10-217.9 x 1020.7280.134
35.0308.262.1 x 10-220.7 x 1020.7140.156
T (°C)T (K)w1 w2 x1 x2
25.0298.213.7 x 10-2 7.7 x 1020.1950.072
25.0298.214.9 x 10-233.2 x 1020.210.308
25.0298.216.8 x 10-249.8 x 1020.2350.458
35.0308.226.0 x 10-212.1 x 1020.3480.107
35.0308.226.3 x 10-220.9 x 1020.3520.184
35.0308.230.1 x 10-235.2 x 1020.3960.304
35.0308.231.9 x 10-236.2 x 1020.4160.31
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.

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.

References:

No references.

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