Thermodynamic data for selected metal sulfates were critically evaluated and compiled as part of the Bureau of Mines program to provide a scientific base for use in developing new technology and predicting the feasibility of new processes. Values for cp deg., S deg., H deg. - H deg. 298, -(G deg. - H deg. 298)/T, ahf deg., Agf deg., and log kf as a function of temperature are given in tabular form. Thermodynamic data were compiled for voso4, cr2(so4)3, mnso4, feso4, fe2(so4)3, coso4, niso4, cu2so4, cuso4, cuo.Cuso4, znso4, and zno.2Znso4, together with their stable hydrates.