Preliminary ''steam tables'', which give the thermodynamic data for the coexisting liquid and gas and the thermochemical data for the NaCl component in the liquid for the system H{sub 2}O-NaCl, are given for liquid concentrations between 0 mol NaCl/kg H{sub 2}O and halite saturation at temperatures between 80[sup 0} and 325{sup 0}C. The tables were calculated from parametric equations of state.