Propane is a high vapor pressure highly combustible gas, which is primarily a hydrocarbon. The chemical formula of propane is C3 H 8. Propane owing to its high vapor pressure and a very low freezing temperature is the most preferred fuel in European countries.Indian industries have also started recognizing the unique features and benefits of using pure grade propane instead of LPG for their combustion processes.
Butane is a low vapor pressure highly combustible gas, which is primarily a hydrocarbon. The chemical formula of butane is C4 H 1 0. . Butane owing to its low vapor pressure is the most preferred for low-pressure applications like aerosol propellant, polyethylene polymerization, solvent polyethylene forming agent-forming agent for making Styrofoam, gas lighters etc.
Liquefied Petroleum Gas ( LPG) is a mixture of propane and butane in varying percentages . Propane and Butane are basically alkanes owing to which they do not react with each other chemically to from a third compound but co exist together as a finely distributed mixture with each having its own distinct properties.Indian standards have a maximum permissible percentage of propane as 50 % . As the characteristics of any good grade LPG depends upon the percentages of Propane and Butane present in the mixture so care should be taken to ensure that the LPG being used has higher percentage of Propane and is totally free from unsaturates.