Not only are IDAC calculations appealing in principle, but our results suggest that these calculations can indeed be helpful in identifying force field issues needing attention. Specifically, graphic analysis of experimental and calculated k B T ln γ ∞ values enabled the identification of possible systematic errors in the force field used in this study. We hope that the evidence shown in this work drives future research in expanding the number of experimental activity coefficients at infinite dilution in the literature, and in using γ ∞ as a new source of constraints for force field parameterization and method development.