Information About LP-Gas

Information About LP-Gas	Propane	Butane
Formula	C₃H₈	C₄H₁₀
Boiling Point, ºF	-44	15
Specific Gravity of Gas (Air=1.00)	1.50	2.01
Specific Gravity of Liquid (Water=1.00)	0.504	0.582
Lbs. per Gallon of Liquid at 60º F	4.20	4.81
BTU per Gallon of Liquid at 60º F	91502	102032
BTU per Lb. of Gas or Liquid	21548	21221
BTU per Cu. Ft. of Gas at 60º F	2488	3280
Cu. Ft. Vapor (at 60°F and 14.7 PSIA)/Gal. Liq	36.38	31.26
Cu. Ft. Vapor (at 60°F and 14.7 PSIA)/Lb. Liq	8.66	6.51
Cu.Ft.Vapor(at60°Fand14.7PSIA)/Cu.Ft.ofLiq	272	234
Latent Heat of Vaporization at Boiling Point BTU/Gal.	773	808
Combustion Data: Cu. Ft. Air Required to Burn 1 Cu. Ft. Gas	23.86	31.02
Flash Point, ºF	-156	N.A
Ignition Temperature in Air, ºF	920-1120	900-1000
Temperature in Air, ºF Limits of Flammability	3595	3615
Percentage of Gas in Air Mixture; At Lower Limit – %	2.15	1.55
Percentage of Gas in Air Mixture; At At Upper Limit – %	9.6	8.6