Density and viscosity of aqueous solutions of 2-piperidineethanol, (2-piperidineethanol plus monoethanolamine), and (2-piperidineethanol plus diethanolamine) from (288 to 333) K

The densities and viscosities of aqueous solutions of 2-piperidineethanol ( 2-PE) and aqueous blends of 2-piperidineethanol with monoethanolamine ( MEA) and diethanolamine ( DEA) have been measured at ( 288, 293, 298, 303, 308, 313, 318, 323, 328, and 333) K. The total amine mass fraction in all solutions was kept within 30 % in view of recent interest in using concentrated amine solutions in gas treating. Correlations for the density and viscosity of the binary and the ternary mixtures are presented.