HP Gas

Hexafluoro-1,3-butadiene (Hexafluoro-1,3-butadiene)

Properties and Classification

Appearance: Colorless and odorless gas UN Number: 3160
CAS Number: 685-63-2 Liquefied gas

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


* Please inquire for the details separately.


Item 10L cylinder 47L cylinder
Size Inside diameter 140mm 232mm
Height (to the neck portion) 850mm 1370mm
Height (with a protective cap) * 1000mm 1520mm
Valve nozzle height (center) * 875mm 1380mm
Loading weight 5kg, 10kg 35kg, 50kg
Material Manganese steel

* 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 left-hand threads
Material BRASS

Physical & Chemical Properties

Item Unit Data
Chemical formula C4F6
Molecular weight 162.03
Boiling point °C 5.4
Melting point °C -132.1
Specific gravity (air: 1) 5.6
Liquid density (20°C, saturated liquid) kg/L 1.434
Gas density (boiling point) g/L 7.096
Critical temperature °C 170.7
Critical pressure MPa 6.08
kg/cm2 62.0
Flammability °C 490
Toxicity Not applicable
Latent heat of vaporization (boiling point) kJ/kg 161.8
Maximum permissible concentration (ACGIH) ppm
Explosive limit (in air) vol% 5ß`27

Temperature – Vapor Pressure Curve

Hexafluoro-1,3-butadiene (Hexafluoro-1,3-butadiene)