Molar enthalpies of vaporization of the branched aliphatic alkyl esters of dicarboxylic acids R-CO2-(CH2)(n)-CO2-R with n=(0-4) with R-iso-C3H7, tert-C-4-H-9 were obtained from the temperature dependence of the vapour pressure measured by the transpiration method. These experimental results were checked for internal consistency and compared with the data available from the literature. A linear correlation of enthalpies of vaporization Delta H-g(l)m (298.15K) of the alkyl esters of dicarboxylic acids with the number of carbon atoms, as well as with the Kovat's indices on the low-polar GC column has been found. (C) 2011 Elsevier B.V. All rights reserved.