The calculated NRTL model parameters for all VOC + IL binary
system studied are given together with respective standard deviations
of fits in Table 9. The quality of the fits, as judged by the plots
in Figs. 4–6 and values of standard deviations of fits in Table 9, is
quite good. Although residuals of the constrained fits for methyl
acetate containing systems are larger and somewhat systematic,
they correspond to the estimated level of experimental
uncertainties