SF6 Gas Handling and Safety Information

 

Safe Handling Overview

Sulfur hexafluoride (SF6) is a colorless, odorless, inert, and non-flammable compressed gas. Under normal conditions of use, it does not present a toxic hazard. The primary health risk associated with SF6 is asphyxiation due to oxygen displacement if released in confined or inadequately ventilated areas. Because SF6 is significantly heavier than air, it may accumulate in low-lying or enclosed spaces.

When handled as a liquefied compressed gas, SF6 will rapidly vaporize at ambient temperatures and pressures. Direct contact with the liquefied gas may result in frostbite or cold burns to exposed skin or tissue.

Cylinders contain gas under high pressure and must be handled, stored, and transported in accordance with established compressed gas safety practices and applicable regulatory requirements.

Important: Always ensure adequate ventilation when handling SF6 in confined or low-lying areas to prevent oxygen displacement.

Refer to the Safety Data Sheet (SDS) for detailed guidance regarding safe handling, storage, exposure controls, personal protective equipment, and emergency response procedures.

 

Safety Data Sheets

Download current SDS documentation:

 

SF6 Technical Specifications

Molecular Weight 146.06 g/mol
Boiling Point −82.7°F (−63.72°C)
Critical Temperature 113.97°F (45.54°C)
Critical Pressure 545.34 psia (37.59 bar)
Vapor Pressure @ 70°F (21.1°C) 320 psig
Specific Gravity @ 70°F, 1 atm (Air = 1) 5.043
Specific Volume @ 70°F (21.1°C) 2.648 ft³/lb (0.165 m³/kg)
Hazard Class 2.2 – Non-Flammable Compressed Gas
UN Number UN1080
Proper Shipping Name Sulfur Hexafluoride

 

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