Comprehensive Thermodynamic and Molecular Interaction Study of N-Methyl-2-pyrrolidone (NMP) and Carbon Tetrachloride Binary Mixtures

Abstract

This study presents a detailed thermodynamic and molecular interaction investigation of the binary liquid mixture composed of N-Methyl-2-pyrrolidone (NMP) and Carbon Tetrachloride (CCl4) at 308.15 K. Density and viscosity measurements were carried out over the entire composition range. Excess properties were analyzed to understand intermolecular interactions between the polar aprotic solvent (NMP) and the non-polar chlorinated solvent (CCl4). The results indicate weak dipole–induced dipole interactions and near-ideal mixing behavior with slight deviations at intermediate compositions. The findings contribute to solvent system design and separation processes in chemical industries.