SDS Volume (5171)

Volume 78. Acetonitrile Binary Systems, p None

Original Measurements

Moolel, M.; Schneider, H.; Z. Phys. Chem. 74, 237 (1971).

Variables:

Room Temp: 259 - 273 $\pu{K}$

Prepared by:

V.P. Sazonov

Method/Apparatus/Procedure:

The synthetic method was used. The solutions were prepared by weighing the components. Phase separation was followed optically by determining the temperature at which opalescence in a single phase or the disappearance of the phase boundary in a mixed phase occurred. This temperature was measured by means of a thermistor, which dipped into the experimental solution; about 4 mL in volume, kept stirred in a three-walled container and directly observed through a glass window. Through the inner mantle of the container, thermostated water was circulated; the outer mantle was evacuated to avoid condensation of atmospheric moisture on the observation window, as the temperature was lowered. The temperature variation was at the rate of about 0.2 °C/min.

Source and Purity of Materials:

1. Fluka; puriss.; purity > 99.5 mole%; not purified.
2. Twice distilled.

Estimated Errors:

Ambient temperature: ±0.1 K