Knowledge of the density and viscosity of solvents is required for engineering design of equipment involving solvents. In addition, remedy there is interest in using volumetric data for calculation of the effects of pressure and temperature on thermodynamic properties. Excess thermodynamic properties are of great importance to our understanding of the nature and extent of molecular aggregation resulting from intermolecular interactions. Mixtures of water and organic solvents often show strong deviations from ideality as regards to density, medicine viscosity, hospital and refractive index. Water has a great ability to support extensive hydrogen-bonding networks.

In this study, the density, viscosity, and refractive index are measured using a DMA 4500 vibrating tube digital viscometer, Ubbeholde viscometers (0, 0c, 1, 10, 11, 23, and 30), and a Leica Mark II plus refractometer. The main objective is to measure the viscosity, density, and refractive index for the aqueous physical solvents, aqueous amines, mixed solvents, and aqueous amine blends. The derived excess volumes, partial molar volumes at infinite dilution, viscosity deviations, and Nissan-Grunberg interaction energy constants are used to have a better picture of the solute-water interactions. In some cases, complex formation can occur. The final aim is to be able to use these properties to help in screening the physical solvents for their capacity for CO2absorption.