LPG or liquefied petroleum gas is the mixture of propane and butane which is mainly distributed in small cylinders in liquid form. LPG has a wide variety of uses as fuel for cooking, heating, motor fuel, refrigerant gas etc. BSTI identification number for LPG is – BDS 1182:2003.

Sl.	Properties	Unit	Specification	Test Method
01	Density at 15⁰C	Kg/L	0.55±0.01	ASTM D1657
02	Vapor Pressure at 37.8 ⁰C	psi	Max.100	ASTM D1267
03	Copper Strip Corrosion (1 hour at 37.8⁰C)	-	Max No. 1	ASTM D1838
04	Volatility: Evaporation temperature for 95 % vol	⁰C (⁰F)	Max 2.2 (Max.36)	ASTM D1837
05	Composition: Propane Butane	mol%	Min. 30 Min. 60	Gas Chromatography