In-depth physico-chemical and structural investigation of dicarboxylic acid/choline chloride NaDES: a spotlight on the importance of a rigorous preparation procedure
In this study, we report the density, viscosity, conductivity, and X-ray diffraction profile of the deep eutectic solvent (DES) formed by choline chloride and different dicarboxylic acids (i.e., malonic, oxalic, succinic, or fumaric acid) at room temperature. These compounds have recently found several applications in green chemistry methodologies and consequently require the highest purity standards.