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

Phase-diagram of the system LiF-NaF-Na₂SO₄ and its thermodynamic analysis. 1. Experimental investigation of the phase diagram

J. Gabčová and P. Fellner

Department of Inorganic Technology, Faculty of Chemical Technology, Slovak Technical University, CS-812 37 Bratislava

Abstract: Phase equilibria solidus—liquidus in the system LiF-NaF-Na₂SO₄ were determined by the method of thermal analysis. A congruently melting compound of stoichiometric composition Na₃FS0₄ is formed in the system NaF— Na₂SO₄ . Composition of investigated mixtures was chosen with re­spect to thermodynamic analysis of the system. From this point of view the systems LiF—Na₃FS0₄  and LiF—Na₂SO₄ are of special interest. The former one contains a compound which partly dissociates under melting and in the latter system a region of primary crystallization of Na₃FS0₄ occurs.

Full paper in Portable Document Format: 442a177.pdf

Chemical Papers 44 (2) 177–182 (1990)