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Sulfur Hexafluoride (SF6) is a colorless and odorless gas that is slightly soluble in water. It is manufactured by a direct combination of sulfur vapor and fluorine. It is toxic only in high concentrations and it has a limited industrial use as a dielectric fluid.

Molecular weight: 146.05Critical temperature:318.7 K
Melting point: 222.5 KCritical pressure:3.76 MPa
Boiling point:209.3 KCritical density:738 kg/m3
Normal vapor density:6.52 kg/m3(@0°C, 101.3 kPa)
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