The Experimental Measurement And Correlation Of Excess Enthalpies For Turpentine Oil System

Chemical components in turpentine oil were analyzed by GC-MS and thirty seven compounds were isolated from the rude turpentine oil whlie thirty two were identified. The main components in turpentine oil system are a-pinene, β-pinene, p-cymene and limonene etc.The excess enthalpies for two binary systems of turpentine oil system were measured at 298.15K and atmospheric pressure by RD496-III microcalorimeter and correlated by Redlich-Kister equation and the standard deviations were quite small. The experimental data of excess enthalpies for the binary system of (s)-(-)-limonene+β-pinene are in good agreement with that of the reference, besides some data on the maximum were a little smaller than that of the reference. The excess enthalpy data of β-pinene+p-cymene was firstly reported. The results showed that the experimental excess enthalpies for turpentine oil system could be measured by RD496-III microcalorimeter.The excess enthalpies for three binary systems of α-pinene+β-pinene,...