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测定T2-甲基戊烷、3-甲基戊烷和正乙烷在293．15－318．15K温度范围的热压力系数．一个根据对应状态原理建立的模型被用来描述链烷烃的内压，它们的模型参数能很好地用分子连通指数关联．用这种方法能预测各种链烷烃从三相点到临界点广阔温度范围的内压．
The thermal stress coefficients of T2-methylpentane, 3-methylpentane and n-hexane at the temperature range of 293.15-318.15 K were determined. A model based on the corresponding state principle is used to describe the internal pressure of paraffins and their model parameters are well correlated with the molecular connectivity index. Using this method, it is possible to predict the internal pressure of various paraffins from the triple point to the broad temperature range of the critical point.