纯化合物相变数据库

相变数据库（PTDB）包括超过18,000种纯化合物的相变数据，这些相变数据提供纯化合物（包括有机化合物和机化合物）的相变、临界点以及三相点的基本性质。相变数据包括沸点、熔点、凝固点、融化热、蒸发热、升华热、融化熵、蒸发熵、相变熵等性质；临界点数据包括临界点温度、临界点压力、临界点体积、临界点密度、临界点压缩因子、偏心因子、偶极距等性质；三相点数据包括三相点温度和三相点压力性质。作为化学主题数据库化合物信息整合的一部分，通过化学主题数据库门户集成检索，可访问到相关信息。The Phase Transition Database (PTDB) contains phase transition data for over 18,000 pure compounds. This dataset provides fundamental properties of phase transitions, critical points and triple points for these pure compounds, including organic and inorganic compounds. The phase transition data covers properties such as boiling point, melting point, freezing point, heat of fusion, heat of vaporization, heat of sublimation, melting entropy, evaporation entropy and phase transition entropy; the critical point data includes critical temperature, critical pressure, critical volume, critical density, critical compressibility factor, acentric factor and dipole moment; the triple point data covers properties including triple point temperature and triple point pressure. As part of the compound information integration of the Chemical Thematic Database, relevant information can be accessed via the integrated retrieval on the Chemical Thematic Database portal.

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背景与挑战

背景概述

该数据库收录了超过18,000种纯化合物的相变数据，涵盖相变点、临界点和三相点的多种性质，如沸点、熔点和临界温度等。作为化学主题数据库的组成部分，它支持集成检索以访问相关信息。