松节油是我国的一大资源,它的主要组份是α-蒎烯和β-蒎烯,这两种化合物均为合成香料、医药和萜烯树脂等的重要化工原料,它们的分离和转化常常需要准确的化学热力学数据。由于文献中这些数据不全或准确性较差,有必要进行新的测定.本文报导了α-和β-蒎烯蒸发焓的测定结果。实验部分1.样品α-和β-蒎烯是从松节油中经分离制得的产品,由中山大学化学系提供,并进一步用Per- Turpentine is a major resource in our country. Its main components are α-pinene and β-pinene. These two compounds are important chemical raw materials for synthetic perfumes, pharmaceuticals and terpene resins. Their separation and transformation are often Need accurate chemical thermodynamic data. Due to incomplete or poor accuracy of these data in the literature, it is necessary to conduct a new determination.This paper reports the results of the determination of enthalpies of α-and β-pinene evaporation. Experimental Section 1. Samples α- and β-Pinene are products isolated from turpentine, supplied by the Department of Chemistry, Sun Yat-sen University and further characterized by Per-