Vapour pressure measurements with a thermobalance

The 'Modified Entrainment Method' developed by Faktor et al. [1] is an attr active yet not very popular method to determine vapour pressures in the ran ge of 0.002 to 0.1 bar at 10-1000 degrees C. The method consists of evapora ting a solid or liquid from a small bulb through a capillary into a flowing inert gas, e.g. argon. The vapour pressure of the sample is related to the rate of evaporation and some easily controlled experimental parameters. In the present paper a new convenient experimental set-up is described and it s use to study the decomposition of metal complexes is illustrated.