Temperature and concentration dependence of the viscocity of aqueous sodium nitrate and sodium thiosulphate electrolytic systems

Densities and viscosities of aqueous sodium nitrate and sodium thiosulphate solutions were measured as functions of temperature (⋍288.0–328.4 K) and concentration (from dilute to almost saturation point). The temperature dependence of the viscosity has been analysed using the Vogel-Tammann-Fulcher equation. The concentration dependence of the viscosity has been described using a three-parameter isothermal equation.