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Propylene (C3H6) Gas

Propylene (C3H6) is a colorless, flammable, liquefied gas with a detectable odor.

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Propylene (C3H6)

Formula: C3H6

What is Propylene (C3H6) Gas?

Propylene or Propene, is an alkene and unsaturated organic compound. Differently from Propane, it has a double bond that gives it a combustion advantage i.e. it burns hotter. The dominant technology for producing propylene is steam cracking. The same technology is applied to ethylene. Propene is the second most important starting product in the petrochemical industry after ethylene. It is the raw material for a wide variety of products.


Propylene (C3H6) Uses In Various Industries

Polypropylene manufacturers consume nearly two-thirds of global production. Polypropylene end uses include films, fibers, containers, packaging, and caps and closures. Propene is also used to produce important chemicals such as propylene oxide, acrylonitrile, cumene, butyraldehyde, and acrylic acid. In industry and workshops, propene is used as an alternative fuel to acetylene in Oxy-fuel welding and cutting, brazing, and heating of metal for the purpose of bending.

It has become a standard in BernzOmatic products and others in MAPP substitutes now that true MAPP gas is no longer available.




Further Specifications

Cylinder Sizes

  • Used to product polypropylene plastics for injection molding
  • Used to manufacture propylene oxide, acrylic acid, oxo alcohols & isopropanol
  • Used to manufacture a variety of construction materials such as siding, air & moisture barrier membranes, carpet textiles, films and sheets used in insulation as well as piping
  • Propylene is an attractive alternative to propane for heating and cutting due to its superior combustion performance. It is also widely used as a fuel gas for high-velocity oxygen fuel (HVOF) processes
Grade 2 Grade 3 Grade 3.5 Grade 3.7 Grade 4 Grade 4.5
Purity 99.0% 99.9% 99.95% 99.97% 99.99% 99.995%
Nitrogen < 100 ppmv < 20 ppmv < 10 ppmv < 10 ppmv < 5 ppmv < 5 ppmv
Oxygen < 5 ppmv < 2ppmv < 2ppmv < 2ppmv <1 ppmv < 1 ppmv
Carbon Dioxide < 10 ppmv < 4 ppmv < 2 ppmv < 1 ppmv < 1 ppmv < 1 ppmv
Other Hydrocarbons < 9000 ppmv < 950 ppmv < 470 ppmv < 290 ppmv < 90 ppmv < 45 ppmv
Moisture < 10 ppmv < 4 ppmv < 3 ppmv < 3 ppmv < 2 ppmv < 2 ppmv
Total Impurities < 1 % < 1000 ppmv < 500 ppmv < 300 ppmv < 100 ppmv < 50 ppmv
Chemical & Physical Properties
Molecular Weight 42.08
Specific Volume 9.4 cu cf/lb
Pressure @ 70° F 136.6 psig
Flammability Limits 2.0 - 11.0% in air
Valve Outlet CGA 350/510 LB CGA 170
Shipping Information
DOT Name Propylene
Hazard Class 2.1
DOT No. UN 1077
DOT Label Flammable Gas
CAS No. 115-07-1
Cylinder Size Fill Weight (lb)
1/2 Ton 430
LP30 105
LP15 50
LP05 20
LP01 5
49L/Size 300 45
44L/Size 200 40
16L/Size 80 15
7L/Size 35 6

FAQs about Propylene (C3H6)

How do you separate Propylene (C3H6)?

Separating propylene/propane mixtures is one of the most challenging processes in the petrochemical industry. Propylene can be separated by fractional distillation from hydrocarbon mixtures obtained from cracking and other refining processes. Currently, the most widely used propene separation method by industry is cryogenic distillation.

**Moisture level guaranteed only when Electronic Fluorocarbons prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.
This product is analyzed liquid phase.

*This gas not available for purchase online.