Nucleation in supersaturated vapours of solid and liquid naphthalene and phthalic anhydride

Abstract

The critical supersaturations of vapours of solid naphthalene and phthalic anhydride have been measured by using downward thermal diffusion cloud chamber. The experimental data have been fitted by an empirical fitting formula to allow predictions of behaviour of vapour-noncondensable gas mixtures of both compounds in condensation processes. Including the previously published data on critical supersaturations of vapours, measured above the triple point, the P-T diagrams have been drawn for both compounds.