1.1 正丁烷的热物理性质表用于计算正丁烷的压力-体积-温度（PVT）、热力学和输运性质，用于工艺设计和操作。两个表提供了在135 K和临界点425.13 K之间的温度下，液-汽平衡条件下的特性（饱和特性），一个用于液体，另一个用于蒸汽。第三个表提供了选定温度下的特性 T , p 温度在140 K和570 K之间，压力为20 MPa时的平衡相点。这些表格是使用国家标准和技术研究所标准参考数据库产品REFPROP（10.0版）开发的。 1.2 以国际单位制表示的数值应视为标准值。 本标准不包括其他计量单位。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 The thermophysical property tables for normal butane are for use in the calculation of the pressure-volume-temperature (PVT), thermodynamic, and transport properties of normal butane for process design and operations. Two tables provide properties at the conditions of liquid-vapor equilibrium (saturation properties), one for liquid and one for vapor, at temperatures between 135 K and the critical point, 425.13 K. A third table provides properties at selected T , p points for the equilibrium phase at temperatures between 140 K and 570 K at pressures to 20 MPa. The tables were developed using the National Institute of Standards and Technology Standard Reference Database product REFPROP, version 10.0. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.