Thermochemical Properties of Selected Terpenes

This work is a continuation of our project of physico-chemical characterization of terpenic compounds participating as a source of secondary organic aerosols. In this work, S-(–)-limonene, terpinolene, (1R)-(–)-myrtenal, and α-terpinyl acetate were studied. Their densities, sound velocities, and isobaric heat capacities were measured in the temperature range (290–343) K, vapor pressures were measured in temperature range where stable boiling was achieved. The previous work was supplemented by measurement of isobaric heat capacities of α-pinene and β-pinene. Experimental values of vapor pressures were compared with prediction by COSMO-RS. Modern nonstatistical algorithms based on mathematical gnostics were used for data analysis.