Liquefied Petroleum Gas (also called LPG, GPL, LP Gas, autogas, or liquid propane gas) is a flammable mixture of hydrocarbon gasses used as a fuel in heating appliances and vehicles. It is increasingly used as an aerosol propellant and a refrigerant, replacing Chlorofluorocarbons in an effort to reduce damage to the ozone layer.

LPG is synthesized by refining petroleum or “wet” natural gas and is usually derived from fossil fuel sources, being manufactured during the refining of crude oil, or extracted from oil or gas streams as they emerge from the ground. It was first produced in 1910 by Dr. Walter Snelling, and the first commercial products appeared in 1912. It currently provides about 3% of the energy consumed, and burns cleanly with no soot and very few sulphur emissions, posing no ground or water pollution hazards. LPG has a typical specific calorific value of 46.1 MJ/kg compared with 42.5 MJ/kg for fuel-oil and 43.5 MJ/kg for premium grade petrol (gasoline). However, its energy density per volume unit of 26 MJ/l is lower than either that of petrol or fuel-oil.


Ethanemol %G.C0.08 max.
Propanemol%G.C2 max.
Total - C4mol%G.C97.5 min.
Total - C5mol%G.C0.82 max.
Sp. Gr. @ (60ºF/60ºF)ASTM D-2598To Be Reported
Copper CorrosionASTM D-1838No. 1a max.
Total Sulfidewt. ppm(Based On ASTM D-3246)30 max.
Hydrogen Sulfidevol.ppmASTM D-2420 / DragerNil
Vapor Press @ (100 ºF)PsigASTM D-259870 max.
Water Contentvol.ppmShaw Dew Point10 max.
Residue on Evaporationvol%ASTM D-21580.05 max


Ethanemol %G.C0.4 max.
Propanemol %G.C98 min.
Butanemol %G.C1.4 max.
Pentanes & Heaviermol %G.C0.01 max.
Copper CorrosionASTM D-1838No. 1a max.
Hydrogen Sulfidevol.ppmASTM D-2420/Drager5 max.
Sp. Gr. @ (60ºF / 60ºF)ASTM D-2598To Be Reported
Sulfur (Volatile)wt.ppm(Based On ASTM D-3246)30 max.
Pressure @ (100 ºF)
psigASTM D-2598200 max.