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.C0.4 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.


No.Parameter NameMaximum (Supreme)The First
1Density at 20, not less780775
2Fractional structure: the temperature started distillations, not above150150
10% it is driven away at temperature, not above165165
50% it is driven away at temperature, not above195195
90% it is driven away at temperature, not above230230
98% it is driven away at temperature, not above250250
3Kinematic viscosity mm2/c (cCT) in +20C, not less1.30 (1.30)1.25 (1.25)
In -40 c, no more8 (8)8 (8)
4The lowest heat of combustion4212042900
5Height of not smoking flame2525
6Acidity of fuel, no more0,70,7
7 Iodic number - grams of iodine on 100 grams of fuel, no more2,53.5
8The temperature of the flash determined in closed, not below2828
9The temperature began crystallization, not above-50-50
10Dependent of temperature on oxidation stability in static conditions at
150 degrees, no mote: concentration of a deposit on 100 see fuel
11Mass fraction of aromatic hydrocarbons, no more2222
12Concentration of actual pitches, no more35
13Mass fraction of the general (common) sulfur0,20,25
14Mass fraction mercaptane sulfur0,0030,005
15Mass fraction of hydrogen sulphideAbsenceAbsence
16Test for a copper plate at 100 degrees within 3 hoursMaintainsMaintains
17The maintenance of ashes0,0030,003
18The maintenance (contents) of water-soluble acids and alkalisAbsenceAbsence
19The maintenance (contents) washed naften acidsAbsenceAbsence
20The maintenance (contents) of mechanical impurity and watersAbsenceAbsence
21Interaction with water, a point, no more: a condition of an interface11
Condition of the divided (shared) phases11