Experimental data for diffusion coefficients obtained by supercritical fluid chromatography (SFC) according to the Taylor-Aris dispersion method are compared with results from predictive equations for dense fluids. The goodness of fit and the bias of the correlation only suggest a slight empirical correction in these equations not specifically formulated for supercritical fluids (SCFs) and justify a persevering effort in experimentation oriented to the development of generalized models.