Partial molar volume of magnesium sulfate in aqueous solutions

The density of aqueous magnesium sulfate solutions was determined experimentally at temperatures 291-448 K, pressures 2-40 MPa, and molal concentrations 0.084-0.842, using the method of constant-volume piezometer. The equation of state, including an expression for the limiting law of the Debye-Huckel theory, is constructed for the MgSO 4 -H 2 O system.