The solubility of acid gases such as CO2 and H2S in 2,2-thiodiglycol (TDG) were measured by static method so called isochoric saturation within the temperature range (303.15-353.15) K by steps of 10 K and pressure up to 1.2 MPa. To calculate the absorption behaviour of gases, density of 2,2-thiodiglycol at the related temperature range was measured with Anton Paar SVM 3000, as well. The outcome solubility data were modelled using Stryjek-Vera modification of Peng-Robinson cubic equation of state (PRSV EoS), and thermodynamic solubility quantities at infinitely diluted solution in 2,2-thiodiglycol were reported. (C) 2019 Published by Elsevier Ltd.