The physicochemical properties

including the density

viscosity

and refractive index of aqueous solutions of sodium glycinate as a solvent for CO

2

absorption in the non-precipitation regime were measured under the wide temperature range of 298.15 to 343.15 K. The concentration of the sodium glycinate in an aqueous form in the non-precipitation regime was identified up to 2.0 mol·L

-1

. The coefficients of thermal expansion values were estimated from measured density data. It was found that

the densities

viscosities and refractive indices of the aqueous sodium glycinate decrease with an increase in temperature

whereas with increasing sodium glycinate concentration in the solution

all three properties increase. Thermal expansion coefficients slightly increase with rising temperature and concentration. The measured values of density

viscosity and refractive index were correlated as a function of temperature by using the least squares method. The predicted data obtained from correlation equations for all measured properties were in fairly good agreement with the experimental data.