Some physical properties of uranium hexafluoride

Abstract

A number of physical constants of uranium hexafluoride are determined. The density of the liquid was measured between 65° and 100° and that of the vapour from 0° to 100°. The specific heat was determined from -60° to +100° and the data were used, together with the vapour-pressure measurements from -15° to +100°, to calculate a vapour-pressure equation for solid and liquid. The critical temperature, melting point, and heat of melting are recorded. The viscosity, surface tension, and refractive index of the liquid were measured between 65° and 100°. The thermal conductivity of the vapour was measured at 5° and 105°, and the viscosity over a temperature range 0-200°. The heat of vaporization of solid and liquid, Sutherland's constant, the mean free path, the parachor, and the molecular refraction have been calculated.