Saturation vapor pressures and vaporization enthalpies of esters of ethylene glycol and lower carboxylic acids

Saturation vapor pressures and vaporization enthalpies of ethylene glycol and C₁–C₅ carboxylic acid disubstituted esters of normal and branched structures are determined by the transfer method in the temperature range of 295 to 327 K. Dependences of vaporization enthalpies versus the number of carbon atoms in a molecule and the retention indices are determined. An analysis of existing calculation schemes is given to help predict the vaporization enthalpy of the compounds under study.