The critical temperatures and pressures of diethyl esters of straight-chain saturated dicarboxylic acids C2H5OOC(CH2)(n-2)COOC2H5 with n = 5, 8, 10 have been measured. The data of this work and the results of the previous measurements have been analyzed and the recommended critical temperatures and pressures of diethyl esters from diethyl ethanedioate to diethyl decanedioate have been given. The internal consistency of the experimental data has been tested by considering the plot (M/p(c))(1/2) versus n, where M is the molar mass, p(c) is the critical pressure. The acentric factors of dicarboxylic acid diethyl esters have been calculated. (C) 2017 Elsevier Ltd.