Thermodynamics of Vaporization of ZrI4 in the Univariant Region: Zirconium Monoiodide/Zirconium

The pressures of gaseous over solid zirconium iodides in the composition range to Zr were measured by a torsion‐effusion method. A univariant region was observed between solids of composition and Zr for which the pressure of gaseous was represented by the equationThese results extend literature information on the thermodynamics of vaporization in the region of the Zr‐I system.