HP Gas

Clean Gas Sulfer Hexafluoride

Properties and Classification

Appearance: Colorless and odorless gas or liquid UN Number: 1080
CAS Number: 2551-62-4 Liquefied gas

* Refer to MSDS for detailed information on the properties and safety of the product.


Purity wt% Min. 99.999
Water wtppm Max. 3.0
Acids wtppm Max. 0.4
CH4 wtppm Max. 0.3
CO2 wtppm Max. 0.3
Air wtppm Max. 6.0
Particle Not smaller than 0.1 micrometer Max. 60/C.F.
Clean Gas Sulfer Hexafluoride


Item 10L cylinder 47L cylinder
Size Inside diameter 140mm 232mm
Inside diameter 850mm 1370mm
Height (to the neck portion)) * 1000mm 1520mm
Loading weight 5kg 30kg
Material Manganese steel (Clean-S-treated)

* Estimated values for when a standard valve is mounted on a standard cylinder. The accuracy of these values is not guaranteed.


Nozzle size Ø22 mm X 14 right-hand threads
Material SUS316L

Physical & Chemical Properties

Item Unit Data
Chemical formula SF6
Molecular weight 146.06
Boiling point °C -63.89
Sublimation point °C -63.7
°F -82.7
Melting point (223.9kPa) °C -50.8
Liquid density kg/L 1.540
Gas density (0°C, saturated liquid) g/L
Critical temperature °C 45.6
Critical pressure MPa 3.77
kg/cm2 36.7
Flammability Toxicity
Toxicity Not applicable
Latent heat of vaporization (0°C 1013MPa) kJ/kg 117
aximum permissible concentration (ACGIH) ppm 1000
Explosive limit (in air, 35°C, 101.3 kPa)

Temperature – Vapor Pressure Curve

Clean Gas Sulfer Hexafluoride