Ms. Lee et al., DECOMPOSITION PRESSURES OF POTASSIUM AND SODIUM FLUOROBORATES AND FLUOROTITANATES, Transactions - Institution of Mining and Metallurgy. Section C. Mineral processing & extractive metallurgy, 103, 1994, pp. 26-32
The decomposition pressures of KBF4(l), NaBF4(s), K2TiF6(l) and Na2TiF
6(s) have been experimentally determined by the transportation techniq
ue. The results were analysed to obtain values for the enthalpies and
entropies of vaporization of the salts in question. The vapour pressur
es of the sodium salts were found to be significantly higher than thos
e of the corresponding potassium salts, which limits their use in the
production of aluminium grain-refining alloys.