SDS Volume (3684)

Volume 69. Ternary Alcohol-Hydrocarbon-Water Systems, p None

Original Measurements

McCants, J. F.; Jones, J. H.; Hopson, W. H.; Ind. Eng. Chem. 1953, 45, 454-6.

Variables:

Room Temp: 311 $\pu{K}$

Prepared by:

A. Skrzecz

Method/Apparatus/Procedure:

The titration method was used to obtain binodal curve. The samples of homogeneous binary mixture were placed in a constant temperature bath and titrated the third component to the cloud point. Each sample was agitated in the constant temperature bath for several minutes between drops of the third component. The temperatures of these systems were raised slightly (1 °F) to obtain homogeneity and their refractive indexes were measured. The analytical method was used for tie lines. (a) A ternary mixture of known composition was shaken for several hours in constant temperature bath and after both phases were carefully separated and their refractive indexes were determined. The intersections of the tie lines with the binodal curve were determined by refractive index interpolation between points of known composition used to determine the curve.

(b) The slopes of the tie lines were checked by determining tie lines by the graphical application of the lever rule as described in [1].

(c) The two phases were analyzed chemically for one or two components.

Source and Purity of Materials:

1. Du Pont, refined; used as received; $n_{D}^{20}$ = 1.3855, d(75°F,60°F) = 0.800.
2. Phillips, pure grade; used as received; $n_{D}^{20}$ = 1.3752, d(75°F,60°F) = 0.654.
3. Distilled; $n_{D}^{20}$ = 1.3330.

Estimated Errors:

Ambient temperature: refractive index ±0.0001; concentration ±0.001 mass% (estimated by the compiler).
Mass concentration (m/v) (1): Not reported.

References

¹ Othmer, D. F.; Tobias, P. E.; Ind. Eng. Chem. 34, 690 (1942).