The kinetic of CO2 absorption into aqueous 1-ethyl-3-methylimidazolium glycinate ([C(2)mim][Gly]) solution was investigated using a double stirred-cell absorber. Density and viscosity of the [C2mim][Gly]) solution were determined, then diffusion coefficient (D-co2) and solubility of CO2 were estimated. The effects of [C(2)mim][Gly] concentration, absorption temperature and CO2 concentration in bulk gas were studied. Calculated results proved that CO2 absorption into aqueous [C(2)mim][Gly] solution was carried out according to a fast pseudo-first order reaction regime. Hatta number (Ha), the enhancement factor (E), the overall reaction rate constant (k(ov)) and the second-order rate constant (k(2)) were calculated by gas-liquid two-film theory. The result showed that E was linear with C-ILs(1/2), and the second-order rate constant was expressed as following equation: k(2) = 6.041 x 10(6) exp((-2801/T)). (C) 2014 Elsevier B.V. All rights reserved.