ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Viscosity of the Molten System KF—KCl—K₂TiF₆

D. K. Nguyen and V. Daněk

Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-842 36 Bratislava

Abstract: The viscosity of the melts of the system KF-KCl-K₂TiF₆ has been measured by means of the computerized torsional pendulum method. In the ternary system at constant temperature the viscosity increases from KCl through KF and from the binary system KF-KCl to K₂TiF₆.Additivity of the logarithms of viscosity Ras adopted as the ideal behaviour of the mixture. Negative deviations from such additive behaviour were found in the binary system KF-KCl probably due to the nonrandom mixing of the anions. Positive deviations from the ideal behaviour were found in the binaries KF-K₂TiF₆ and KCl-K₂TiF₆ probably due to the formation of larger TiF₇^3- and TiF₆Cl^3- anions, respectively.Statistically significant ternary interaction indicates the pronounced formation of both TiF₇^3- and TiF₆Cl^3- anions also in the ternary system.

Full paper in Portable Document Format: 501a4.pdf

Chemical Papers 50 (1) 4–7 (1996)