In this study the liquidus temperature in the ternary Cu-Sb-Sn system was determined by using DTA/DSC experimental technique. Experiments were carried out along three sections of the ternary system assuming x(Cu) = 0.8: x(Cu)/x(Sn) = 1.22 and x(Sb)/x(Sn) = 1, respectively. The liquidus temperatures obtained in this study were compared with calculated liquidus lines. Muggianu approximation method was used to predict respective isopleths along chosen cross-sections. It was found that measured liquidus temperatures are lower than those calculated from respective binary systems using CALPHAD formalism. (C) 2011 Elsevier B.V. All rights reserved.