Recently, Kontogeorgis et al. [G.M. Kontogeorsis, I.V. Yakoumis, P. Coustikos, D.P. Tassios, Fluid Phase Equilibria, 140 (1-2) (1997) 145-146] developed a generalized expression for the ratio of the critical temperature to the critical pressure (T-c/P-c) with the van der Waals surface area (Q(w)). Despite the extensive database involved in the development of this equation, the heaviest compounds involved were n-tetracosane in terms of T-c/P-c ratio and PEG-400 in terms of highest T-c. The maximum T-c/P-c value was below 100. The correlation is further validated in light of recent critical data appearing in the literature for heavy compounds with T-c/P-c ratio up to 185. The satisfactory agreement between experimental and predicted T-c/P-c ratios justifies its application to high molecular weight compounds other than those employed for its development. (C) 1998 Elsevier Science B.V. All rights reserved.