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.
Citation: J. Phys. & Chem. Ref. Data (JPCRD) -
NIST Pub Series: J. Phys. & Chem. Ref. Data (JPCRD)
Pub Type: NIST Pubs
freezing, melting, metrology, SF6, sulfur hexafluoride, thermodynamics, triple point