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DETERMINATION OF VERY LOW VAPOR PRESSURES OF SEVEN ORGANIC COMPOUNDS

Yi Shouzhi Ma Peisheng and Ruan Yongsi (Department of Chemical Engineering, Jilin (Department of Chemical Engineering, Institute of Chemical Technology, JiLin 132022) Tianjin University, Tianjin 300072)   

  • Online:1994-02-25 Published:1994-02-25

七种有机物极微蒸气压数据的测定

衣守志,马沛生,阮永嗣   

  1. 吉林化工学院化工系,天津大学化工系,天津大学化工系 吉林 132022 ,天津 300072 ,天津 300072

Abstract: An experimental apparatus was established for determining very low vapor pressures by using the Knudsen weighing effusion method. The reliability of the apparatus was checked by measuring the low vapor pressures of n-hexadecane. Vapor pressures of 7 substances including n- octadecane, 1-octadecene, diethylphthalate, dimethylterephthalate, di-isopropylnaphthalene, dicyclohexylphthalate and pyrene were determined at temperatures from 298 to 373 K and correlated by the Antoine equation.

摘要: 建立了一套用Knudsen质量损失隙透法的极微蒸气压数据测定装置,用正十六烷作为标准物对设备进行了校验。测定了正十八烷、1-十八烯、邻苯二甲酸二乙酯、对苯二甲酸二甲酯、二异丙基萘、邻苯二甲酸二环己酯和芘在298~373K的极微蒸气压数据。并给出了各自的Antoine系数。

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