On the Melting Curve of Sulfur Hexafluoride

被引：2
|
作者：
Harvey, Allan H. [1 ]
机构：
[1] NIST, Appl Chem & Mat Div, 325 Broadway, Boulder, CO 80305 USA
来源：
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA | 2017年 / 46卷 / 04期
关键词：
freezing; melting; metrology; SF6; temperature; thermodynamics; triple point; NEUTRON-DIFFRACTION; SF6; PRESSURES; PHASES;
D O I：
10.1063/1.5005537
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A previous correlation for the melting curve of sulfur hexafluoride (SF6) is inconsistent with the thermodynamic slope at the triple point derived from the Clapeyron equation. It is shown that this is probably due to the previous authors combining an accurate measurement of the triple point with melting-curve data that were distorted by impurities. A new equation is proposed that is consistent with the Clapeyron slope. (C) 2017 by the U.S. Secretary of Commerce on behalf of the United States. All rights reserved.
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页数：4
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