Relationship between solution shear viscosity and density at the saturation point

Abstract

Properties of supersaturated solutions such as the density, viscosity, and solute diffusivity are dependent on the solute concentration. The diffusion-boundary-layer equations are derived and solved for the natural convection case with the viscosity and density dependent on the solute concentration. The solution obtained demonstrates that, at the vicinity of the saturation concentration cs, there is a non-trivial dependence of the solution viscosity η on its density ρ:η(cs) = η(ρs)αρ12s, where ρs = ρ(cs). This result has been verified in experiments with aqueous solutions of inorganic and organic salts.