Temperature dependence of the retention index for perfumery compounds on aSE-30 glass capillary column - II. The hyperbolic equation

The Antoine-type hyperbolic equation of the retention index temperature dep endence was reported for 82 perfumery solutes on a SE-30 capillary column. The precision was compared with that of the linear equation. The thermodyna mic significance of the parameters was reconsidered and discussed. The meth ylene increments of the thermodynamic functions of solution were used for t he prediction of the vertical asymptote position on the temperature axis at about 400-500 degrees C, in agreement with the experimental data. Therefor e, only two particular cases of this type of hyperbola should exist in a pu re gas-liquid partition process. (C) 1999 Elsevier Science B.V. All rights reserved.