SDS Volume

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

Source Publication

Chang, Y. C.; Moulton, R. W.; Ind. Eng. Chem. 45, 2350 (1953).

Conditions:

Room Temp: 298 $\pu{K}$

Compiler:

A. Skrzecz

Methodology:

The cloud point method, as described in [1], was used. Binary-alcohol benzenes were titrated with water to a sudden appearance of cloudiness. The end point was observed against a bright light as a background. Refractive indexes were measured at 25.5 °C with an Abbe refractometer. To obtain equilibrium, mixtures of known composition were overheated to about 35 °C and placed into a thermostat. When equilibrium was reached and the layers were clear in a bright light, phases were sampled, refractive indexes at 25.5 °C were measured and compositions were determined on the basis of charts obtained in saturation studies.

Sample Information:

1. Source not specified, absolute alcohol; dehydrated by magnesium ethoxide method; BP = 78.3°C; $n_{D}^{25}$ = 1.3596; $d_{4}^{25}$ = 0.7851.
2. Source not specified, reagent grade; dehydrated with $\ce{Na}$ wire, distilled; BP = 80.1°C; $n_{D}^{25}$ = 1.4978; $d_{4}^{25}$ = 0.8725.
3. Distilled.

Measurement Errors:

Ambient temperature: Temp. ±0.1°C (temperature of the bath), composition accuracy 0.5% in the center part of the binary curve.
Mass concentration (m/v) (1): Not reported.

Methodology Citation

¹ Taylor, S. F.; J. Phys. Chem. 1, 461 (1897).