Temperature and concentration dependence of viscosity of Mg(NO 3 ) 2 –H 2 O systems

Abstract

Densities and viscosities of aqueous magnesium nitrate solutions are measured as functions of temperature and composition. The temperature dependence of viscosity is described by the Vogel–Tammann–Fulcher (VTF) equation. By accounting quantitatively for the concentration dependences of all three parameters involved in the VTF equation an improved isothermal equation is obtained, it describes satisfactorily the concentration dependence of viscosity.