Quecksilber—Halogensysteme, 3. Mitt.: Das System Hg₂J₂−Hg₂Cl₂

Abstract

The Hg₂I₂−Hg₂Cl₂ phase diagram was constructed by using X-ray and thermal analyses. At room temperature a miscibility gap in the solid state extends from 14 to 89 mole% Hg₂Cl₂ which closes at 212°C. Above 212°C there is a range of complete solid solubility followed at higher temperatures by a three phase region with a minimum in the solidus and liquidus curves at 10 mole% Hg₂Cl₂ and 216°C. A miscibility gap in the liquid state has a critical temperature of 287°C for pure Hg₂I₂ which increases strongly on addition of Hg₂Cl₂.