• L.P.G.: Liquefied Petroleum Gas. It consists of about 65 to 75% Butane, 23 to 33% Propane, a little bit Ethane and Ethylene. A typical composition is 70% Butane and 30% Propane. (Propane 27.5%, ISO butane 14.7%, N. Butane 55.7%, CS 2%).
• Gaseous P.G. is almost twice as heavy as natural air.
• Liquid L.P.G. is almost half as heavy as water. A weight of1Ltr. L.P.G. is 0/541Kg.
• Gas pressure inside the cylinder remains constant at the same temperature, whether the cylinder is full, half or one eight It equals the saturated vapor pressure of L.P.G. at that temperature.   Only when the last drop of liquid L.P.G. has evaporated, the cylinder pressure will start falling down.
• One liter of liquid P.G. becomes 238 liter of gaseous L.P.G. as 15°C and 760 mm Hg, or 1 kg of gas will become 444 liters of gas.
• For complete combustion, 1 volume of L.P.G. requires 31 volumes of dry air. The products of combustion produces 23 volumes of nitrogen, 4volumes of Cot and 5 volumes of water.
• Gas Calorific value= 21,3000 btu/lb=11,833 Kcal/kg.

• Pressure: Ikg/cm2=14.22 psi= 0665 K pa(kilopascal)= 0.980665 bar= 9.80665 N/cm2(Newton / cm2)=10m of water column(w.c.)= 32.81ft of w.c.= 735.5 mm of Hg= 28.96″ of Hg.
• 1Atmosphere= 760 mm of Mercury= 92 Inches of Mercury
• 300 mm water= 30 gm / cm2
• Column=11.81 Inches water column= 0/43/sq. Inch

• Vapor pressure at 65°C (Gauge)=16.87 Kgf./cm2
• Boiling Point at atmosphere pressure=0°C
• Specific Volume of gas at 15°C, 760 mm Hg.=444 ml/gm=444 liter/kg.=201 liter/lb.=7.1c. ft./lb.=15.65 c.ft/kg.
• Specific Gravity of liquid (at 15°C,760 mm Hg)=0.541 (water=1)
• Specific Gravity of gas=2(Air=1)
• Limits of flammability=1.8% to 9%
• Minimum ignition temperature in air=890°C
• Theoretical max. flame temperature in air is 2000°C and in oxygen is 2850°C.

These all data’s are approximate and we are not responsible for the consequences of any actions taken on the basic of the information provided unless that information is subsequently confirmed in writing. It is notified that disclosing, copying or taking any action in reliance on the contents of this information is strictly prohibited.

L.P.G.

CALORIFIC VALUES OF SOLID & LIQUID FUELS

GAS PRESSURE VS TEMPERATURE