Volatilities of the Components of the Saturated Vapors of UCl4 Solutions in a Molten Equimolar NaCl–KCl Mixture

The volatilities of the components of the saturated vapors of molten UCl4–NaCl–KCl mixtures containing 2.0, 5.0, 12.2, 25.1, 32.9, and 49.7 mol % UCl4 are measured by a transpiration technique in the temperature range 880–1200 K. The chemical composition of the saturated vapors is determined. The vapor phase is most likely to contain the binary NaUCl5 and KUCl5 compounds, which make a significant contribution to the total vapor pressure over the molten mixtures. The molten mixtures are found to exhibit negative deviations from ideal behavior.