Densities and Viscosities of 2-Amino-2-methyl-1-propanol, 2-(Ethylamino)ethanol, and Water Solutions

The densities and dynamic viscosities of pure components, binary solutions and ternary solutions of 2-amino-2-methyl-1-propanol (AMP), 2-ethylaminoethanol (EAE) and water were systematically measured at (293.15–323.15) K. Based on experimental findings, calculations were made for the excess molar volume, thermal expansion coefficient, dynamic viscosity deviation, and solution viscous activation energy to assess intermolecular interactions. The negative excess molar volumes of binary and ternary aqueous solutions indicate significant hydrogen bonding interaction and a filling effect within the solutions. The negative excess molar volumes of binary and ternary aqueous solutions indicate significant hydrogen bonding interactions and a filling effect within the solutions. For the AMP–EAE system, the hydrogen bonding interaction and filling effect are weakened due to the similar volume and steric hindrance effect.