The (rho, rho, T) and (rho(s), rho(s), T-s) properties of {(l - x)CH3OH + xLiBr} over a wide range of state parameters are reported for the first time. The experiments were carried out in a constant volume piezometer over a temperature range from 298.15 K to 398.15 K, at 0.08421, 0.13617, 0.19692, 0.23133 and 0.26891 mole fractions and from atmospheric pressure up to 60 MPa. The experimental uncertainties are DeltaT = +/-3 mK for temperature, Deltap = +/-5(.)10(-2) MPa for high pressure and Deltap = +/-5(.)10(-4) MPa for atmospheric pressure, Deltarho = 3(.)10(-2) kg(.)m(-3) for density. An equation of state was derived for correlation of the experimental data of the solutions., (C) 2003 Elsevier Ltd. All rights reserved.