LPG is the acronym of Liquefied Petroleum Gases.

LPG are the light hydrocarbons fraction of the paraffin series, derived from refinery processes, crude oil stabilisation plants and natural gas processing plants comprising propane, butane and butylenes or a combination of them.

LPG may be also called liquefied refinery gases.

LPG have no natural odor

As light hydrocarbons of the paraffin series, LPG are derived solely from the distillation of crude oil.

LPG can be liquefied under low pressure (5-10 atmospheres).

In the liquid state and at a temperature of 38 °C, LPG have a relative vapor pressure less than or equal to 24.5 bars.

LPG specific gravity ranges from 0.50 to 0.58.

Unlike the liquefied natural gas (LNG), LPG do not require cooling to be liquefied.

Large quantities of LPG are now available as a by-products from the gas and petroleum industries.

LPG are obtained as light ends from the fractionation of the crude oil.

LPG have good caloric value, to be used for transportation fuel as well as cooking fuel.

Since LPG have no natural odor, a distinctive odorant is added so that it will be noticeable should a leak occur.

Because of the low boiling point (−44 to 0°C) and high vapor pressure of these gases, their handling as liquids in pressure cylinders is necessary.

Then LPG transportation is easy with steel pressurized bottles to be used in remote areas as domestic fuel.

LPG are often employed as fuel for tractors, trucks, buses.

LPG have a high octane rating, making it useful in engines having compression ratios above 10:1.

Another factor of importance in internal combustion engines is that LPG leave little or no engine deposit in the cylinders when they bum.

The exhausted gas from engine combustion are also pretty clean compared with gasoline and diesel so that LPG can be used in industrial applications for handling and forklift trucks.

Owing to demand from industry for butane derivations, LPG sold as fuel are made up largely of propane.

Liquefied Petroleum Gas (LPG)-BULTANE 50% SPECIFICATION

　

	PROPERTY	UNITS	TEST METHOD	VALUE
1	Ethane	mol%	G.C	0.08max
2	Propane	mol%	G.C	2max
3	Total-c4	mol%	G.C	97.5min
4	Total-c4	mol%	G.C	0.82max
5	Sp.Gr. @ (60F / 60F)	-	ASTM D-2598	To be reported
6	Copper Corrosion	-	ASTM-D1838	No. la max
7	Total Sulfide	wt.ppm	Based on ASTM D-3246	30max
8	Hyfrogen Sulfide	vol.ppm	ASTM D2420 / DRAGER	Nil
9	Vapor press @ (100F)	Psig	ASTM D-2598	70max
10	Water Content	vol.ppm	shaw dew point	10max
11	Residue on evaporation	vol%	ASTM D-2158	0.0max

Liquefied Petroleum Gas (LPG)-PROPANE 50% SPECIFICATION

　

	PROPERTY	UNITS	TEST METHOD	VALUE
1	Ethane	mol%	G.C	0.4max
2	Propane	mol%	G.C	98max
3	Butane	mol%	G.C	1.4max
4	Pentanes & Heavier	mol%	G.C	0.01max
5	Copper Corrosion	-	ASTM D-1838	No la max
6	Hyfrogen Sulfide	vol.ppm	ASTM D2420 / DRAGER	5max
7	Sp.Gr. @ (60F / 60F)	-	ASTM D-2598	To be reported
8	Sulphur (Volatile)	wt.ppm	Based on ASTM D-3248	30max
9	Vapor press @ (100F)	Psig	ASTM D-2598	200max
10	Water Content	-	ASTM D-2713	pass