PVTx measurements of the N-methylpyrrolidone/methanol mixed solvent: Cubic and SAFT EOS analyses

The strongly nonideal behavior of the N-methylpyrrolidone (NMP) + methanol binary solvent was studied over the wide ranges of pressure and temperature. From the measured and derived excess properties, strong H-bonding is correlated with several cubic EOS, yielding inaccurate results with the most common equation of state (EOS) and very good data fitting with the Sako-Wu-Prausnitz equation.