Abstract
Vapor pressure of sulfur of sulfur-thallium liquid mixture was measured over the composition range of 0.55∼0.98 by mole fraction of sulfur. Although this mixture is much stable at the composition of Tl2S, sulfur activity is quite high and its partial molar heat of solution is positive in the intermediate range. This result was interpreted in terms of a modification of the sulfur chain on addition of thallium.
