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Propane

Propane is a colorless, flammable, liquefied gas.

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Propane

Formula: C3H8

CAS No: 74-98-6

Propane (C3H8) is a colorless, highly flammable hydrocarbon gas widely used as a fuel, energy source, and petrochemical feedstock. Easily liquefied under moderate pressure, propane is a key component of liquefied petroleum gas (LPG) systems used globally for heating, cooking, and power generation.

In industrial environments, propane is also used in cutting and heating applications, as well as a feedstock for producing propylene and other petrochemical intermediates. Its clean combustion and energy density make it a reliable and efficient fuel across a wide range of applications.

Applications include:

  • Used as a primary fuel in LPG systems for heating, cooking, and energy generation.
  • Applied in metal cutting, brazing, and industrial heating applications.
  • Serves as a feedstock for producing propylene and other petrochemicals.
  • Used as a propellant in aerosol systems and specialty formulations.
  • Applied in agricultural and portable energy applications.

EFC Gases & Advanced Materials supplies high-purity propane with tight control of moisture and critical impurities to ensure consistent performance in demanding applications.

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Download PDS PDF
Applications
Specifications
Further Specifications
Cylinder Sizes
  • Fuel LPG systems and energy applications.
  • Cut, braze, and heat materials.
  • Produce propylene and petrochemicals.
  • Propel aerosol formulations.
  • Support agricultural and portable energy uses.
Grade 2 Grade 3 Grade 3.5 Grade 4 Grade 4.5 Grade 5
Purity 99.0% 99.9% 99.95% 99.99% 99.995% 99.999%
Nitrogen < 800 ppmv < 100 ppmv < 30 ppmv < 10 ppmv < 5 ppmv < 2 ppmv
Oxygen < 200 ppmv < 25 ppmv < 10 ppmv < 2 ppmv < 1 ppmv < 1 ppmv
Carbon Dioxide < 200 ppmv < 20 ppmv < 10 ppmv < 2 ppmv < 2 ppmv < 1 ppmv
Propylene < 800 ppmv < 200 ppmv < 50 ppmv < 10 ppmv < 10 ppmv < 2 ppmv
Other Hydrocarbons < 9,000 ppmv < 900 ppmv < 400 ppmv < 80 ppmv < 40 ppmv < 8 ppmv
Moisture < 10 ppmv < 5 ppmv < 5 ppmv < 3 ppmv < 3 ppmv < 2 ppmv
Total Impurities < 1% < 1,000 ppmv < 500 ppmv < 100 pmv < 50 ppmv < 10 ppmv
Chemical & Physical Properties
Molecular Weight 44.1
Specific Volume 8.5 cf/lb
Pressure @ 70° F 109 psig
Flammability Limits 2.1 - 9.5% in Air
Valve Outlet CGA 510 LB CGA 170
Shipping Information
DOT Name Propane
Hazard Class 2.1
DOT No. UN 1978
DOT Label Flammable Gas
CAS No. 74-98-6
Cylinder Size Fill Weight (lb)
1/2 Ton 420
LP30 100
LP15 50
LP05 20
LP01 5
49L/Size 300 45
44L/Size 200 40
16L/Size 80 14
7L/Size 35 6

Moisture level guaranteed only when EFC Gases & Advanced Materials prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated.

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