Fatty acids methyl esters: Complementary measurements and comprehensive analysis of vaporization thermodynamics was written by Zaitsau, Dzmitry H.;Pimerzin, Andrey A.;Verevkin, Sergey P.. And the article was included in Journal of Chemical Thermodynamics in 2019.Category: esters-buliding-blocks The following contents are mentioned in the article:
Vapor pressures of Me decanoate, Me undecanoate, Me tetradecanoate, Me hexadecanoate and Me octadecanoate were measured by using the static technique. Vapor pressures of Me dodecanoate, Me tridecanoate, Me tetradecanoate, Me heptadecanoate, and Me octadecanoate were measured by using the transpiration method. In the present work, vapor pressures of Me esters of the saturated fatty acids from Me propanoate to Me eicosanoate were collected from the literature. These data together with own complementary results were used for validation of methods for assessment of the difference ΔglCop,m required for the correct adjustment of vaporization enthalpies to the reference temperature 298.15 K. The evaluated vaporization enthalpies for esters from Me propanoate to Me eicosanoate demonstrate impeccable linear chain-length dependence. The CH2 group contributions for different homologous series were derived and compared. Quant. anal. of dispersion interactions in the long-chained esters have been performed. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Category: esters-buliding-blocks).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics