SDS Volume (3770)

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

Original Measurements

Letcher, T. M.; Siswana, P.; Radloff, S. E.; S. Afr. J. Chem. 44, 118 (1991).

Variables:

Room Temp: 298 $\pu{K}$

Prepared by:

A. Skrzecz

Method/Apparatus/Procedure:

The points on the binodal curve were determined by the titration method, as described in [1]. The formation of a cloudy mixture was observed visually on shaking after addition of a known mass of the third component; syringes were precisely weighed. Tie line compositions were determined by the refractive index method [2], and a complementary method using the Karl Fischer titration [3]. Measurements were made at pressure of 94.7 kPa.

Source and Purity of Materials:

1. Merck, AR grade; distilled by addition of anhydrous $\ce{K2CO3}$, distilled; purity >99.9 mole% by glc.
2. BDH; Gold label grade; used as received; purity $\pu{\gt 99.9 mole%}$ by GLC.
3. Source not specified.

Estimated Errors:

Ambient temperature: Composition ±0.005 mole fraction (binodal curve), ±0.01 mole fraction (tie lines).
Mass concentration (m/v) (1): Not reported.

References

¹ Letcher, T. M.; Wootton, S.; Shuttleworth, B.; Heyward, C.; J. Chem. Thermodyn 18, 1037 (1986).
² Briggs; S. W.; Comings, E. W.; Ind. Eng. Chem. 35, 411 (1943).
³ Letcher, T. M.; Siswana, P. M.; van der Watt, P.; Radloff, S.; J. Chem. Thermodyn. 21, 1053 (1989).