Phase equilibria and saturated densities for ethane + ethanol at high pressures were measured at 311.15 K with a static-circulation apparatus. The experimental results include vapor-liquid equilibria, liquid-liquid equilibria, and vapor-liquid-liquid equilibria. The equilibrium composition and density of each phase were determined by gas chromatography and vibrating tube density meter, respectively. The precision and uncertainty of the equilibrium compositions appear to be +/-0.0001 and +/-0.001 in mole fraction, respectively. The uncertainties of density, temperature, and pressure are +/-0.1 kg/m(3), +/-0.1 K, and +/-1 kPa, respectively.