The solubility of ammonia in ethanol has been measured by a static vapor-liquid equilibrium method. The total pressure ranges up to about 0.72 MPa. The temperature amounts to 277.35, 288.65, 298.15, 308.75, 318.25 and 328.15K. The experimental results are used to determine Henry's law constant. From their variation with temperature, the average absolute relative deviation of the Henry's law constant from appropriate smoothing equation is 4.42%. (C) 2011 Elsevier B.V. All rights reserved.