Solid state and sub-cooled liquid vapour pressures of cyclic aliphatic dicarboxylic acids
- 1School of Earth, Environmental and Atmospheric Science, University of Manchester, UK
- 2School of Chemistry, University of Manchester, UK
- 3School of Chemical Engineering and Analytical Science, University of Manchester, UK
Abstract. Knudsen Effusion Mass Spectrometry (KEMS) has been used to measure for the first time the solid state vapour pressures of a series of aliphatic cyclic dicarboxylic acids with increasing ring size. Additionally the atmospherically important compounds; cis-pinonic acid and levoglucosan were also measured. Differential Scanning Calorimetry (DSC) was used to measure melting points, enthalpies and entropies of fusion, which were used to determine sub-cooled liquid vapour pressures for the compounds. The sub-cooled liquid vapour pressure of straight chain, branched and cyclic dicarboxylic acids was compared to a selection of estimation methods.