SDS Volume (3735)

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

Original Measurements

Staňková, L.; Veselý, F.; Pick, J.; Collect. Czech. Chem. Commun. 35, 1 (1970).

Variables:

Room Temp: 293 - 352 $\pu{K}$

Prepared by:

A. Skrzecz

Method/Apparatus/Procedure:

The titration method was used. A binary mixture of known composition (alcohol-hydrocarbon or alcohol-water) and total mass of about 10-15 g placed in thermostat was titrated by the third component from a calibrated microburette until permanent turbidity was formed. The both branches of solubility curve were in mutual agreement. The binodal curve at normal boiling point was measured in a modified Washburn's ebulliometer [1] until the first lasting turbidity by the titration method. Temperatures were recalculated to the pressure of 760 Torr.

Source and Purity of Materials:

1. Source not specified, analytical grade; dried by $\ce{CuSO4}$, distilled with 20 vol% of benzene, the middle fraction was used; $n_{D}^{20}$ = 1.3771, $d_{4}^{20}$ = 0.7851, BP = 82.2°C.
2. Source not specified, technical grade; twice distilled with 10 vol% of propyl alcohol, twice distilled with 10 vol% of 2-butanone; $n_{D}^{20}$ = 1.4967, $d_{4}^{20}$ = 0.8667, BP = 110.6°C.
3. Distilled.

Estimated Errors:

Ambient temperature: Temp. ±0.05°C (compiler); comp. ±0.01 mL (accuracy of titration).
Mass concentration (m/v) (1): Not reported.

References

¹ Washburn, E. R.; Beguin, A. E.; J. Am. Chem. Soc. 62, 579 (1940).