Solid-liquid equilibrium (SLE) and solution density data for the (Na2SO4 + H2NCH2CH2SO3H + H2O) system from (288.15 to 328.15) K were measured by use of the method of isothermal dissolution. From the experimental data, a set of polynomial equations were derived to calculate the solubility of taurine as a function of sodium sulfate mass fraction in the equilibrium solution, and two phase diagrams at (293.15 and 318.15) K were constructed. In general, the density of the equilibrium solution regularly increases with the sodium sulfate concentration. Furthermore, at low temperatures the equilibrium solid phase is Na2SO4 center dot 10H(2)O, whereas at high temperatures the equilibrium solid phase is Na2SO4. All of these data will provide a better understanding of the separation of taurine from Na2SO4 aqueous solutions through crystallization.