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Time of Issue: Apr. 12, 2013 9:23:44
Period OF Validity: Apr. 12, 2014 9:23:44
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Application: Propane is a three-carbon alkane with the molecular formula C3H8, normally a gas, but compressible to a transportable liquid. A by-product of natural gas processing and petroleum refining, it is commonly used as a fuel for engines, oxy-gas torches, barbecues, portable stoves, and residential central heating. Propane is one of a group of liquefied petroleum gases. The others include butane, propylene, butadiene, butylene, isobutylene and mixtures thereof.The advantage of propane in cars is its liquid state at a moderate pressure.Propane is generally stored and transported in steel cylinders as a liquid with a vapor space above the liquid.Commercially available "propane" fuel, or LPG, is not pure. Typically in the USA and Canada, it is primarily propane (at least 90%), with the rest mostly ethane, propylene, butane, and odorants including ethyl mercaptan.Propane is also instrumental in providing off-the-grid refrigeration, usually by means of a gas absorption refrigerator.

Blends of pure, dry "isopropane" (R-290a) (isobutane/propane mixtures) and isobutane (R-600a) have negligible ozone depletion potential and very low Global Warming Potential (having a value of 3.3 times the GWP of carbon dioxide) and can serve as a functional replacement for R-12, R-22, R-134a, and other chlorofluorocarbon or hydrofluorocarbon refrigerants in conventional stationary refrigeration and air conditioning systems.Propane is used as a feedstock for the production of base petrochemicals in steam cracking.

Propane is the primary fuel for hot air balloons.

It is used in semiconductor manufacture to deposit silicon carbide.

Propane is commonly used in theme parks and in the movie industry as an inexpensive, high-energy fuel for explosions and other special effects.

Propane is commonly used as a propellant for Paintball and Airsoft guns, relying on the expansion of the gas to fire the projectile. It does not ignite the gas. The use of a liquefied gas gives more shots per cylinder, compared to a compressed gas.

Propane is used as a propellant for household air freshener sprays.


Product Specification











 Impurity content (ppm)


CH4<100, C2H6 <250, C3H6 <1000, Isobutane<2500, N-Butane<1000, S<1, Moisture<3

Physical Date

Molecular Weight

44.11 g/mole

Boiling Point

-43.7oF (-42.1oC)

Specific Volume

8.5 ft3/lbs at 70oF

Vapor Pressure    

@70oF (21.1oC) = 127 psia (875 kPa)

Liquid Density at Boiling Point

36.3 lb/ft3 (585kg/m3)

Gas Density at 70oF. 1 atm

0.117 lb/ft3 (1.87kg/m3)

Solubility In Water


Freezing Point

-305.8oF (-187.7oC)

Evaporation Rate

N/A (Gas)

Specific Gravity (Air=1)

@70oF (21.1oC) = 1.56

Appearance And Odor    Colorless, odorless gas.


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