The solubility and diffusivity of N2O in 2 and 3 M AMP (2-amino-2-methyl-1-propanol) solutions were measured and correlated with temperature. The N2O analogy was used to estimate the solubility and diffusivity of CO2 in AMP solutions. The density of aqueous AMP solutions was determined over a wide range of temperatures and compositions. The viscosity of 2 and 3 M AMP solutions was measured over the temperature range 23-77-degrees-C.