Density, Viscosity, and Solubility of CO2 in Aqueous Solutions of 2-Amino-2-hydroxymethyl-1,3-propanediol

The densities and viscosities of aqueous solutions of 2-amino-2-hydroxymethyl-1,3-propanediol (AHPD) were measured over the temperature range from (303.15 to 343.15) K and at the AHPD concentrations (5, 10, 15, 20, and 25) mass %. The solubilities of carbon dioxide in aqueous AHPD solutions were also measured at (313.15, 323.15, and 333.15) K over partial pressures of carbon dioxide ranging from (1 to 2000) kPa. The concentrations of aqueous AHPD solutions were (10 and 20) mass %. The thermodynamic characteristics of aqueous AHPD solution as a potential CO 2 absorbent were identified through measurements of these three key properties.