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.

中文翻译：

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关于六氟化硫的熔化曲线

六氟化硫 (SF6) 熔解曲线的先前相关性与由克拉珀龙方程得出的三相点处的热力学斜率不一致。结果表明，这可能是由于之前的作者将三相点的准确测量与被杂质扭曲的熔化曲线数据相结合。提出了一个与克拉珀龙斜率一致的新方程。