A simplified differential equation for the convective diffusion of gas in film flow of shear thinning liquid on a horizontal rotating disk has been solved by the short contact time approach and the relation obtained has been subjected to experimental verification. Oxygen desorption from two polymer water solutions has been used for this purpose. Degrees of desorption near to equilibrium have been achieved at moderate speeds of rotation due to their stronger effect on the mass transfer rate as compared to the case of Newtonian flow. Both the theory and the experiments have shown that the effectiveness of rotation, utilized as a factor intensifying the desorption process, increases when the rheology index of the non- Newtonian liquid decreases.