Liquefied petroleum gas (LPG) - natural hydrocarbon fuel made up of propane and butane. Has a special advantage to compress into a liquid at high pressure and return to a gaseous state in the atmosferic pressure. This means that it can be easily and conveniently stored as a liquid and is a great advantage comparing with natural gas, which can turn to liquid only at low temperatures. In addition to LPG is 250 times denser than the liquid or gaseous hydrocarbons - that is why so much fuel can be gained in the small container, which can be used almost anywhere. Under normal pressure, n-butane becomes liquid at minus 0.5 C, and isobutane at minus 11.7 C. Under normal conditions propane is being liquidised at 2.0 MPa, or 20 atmospheres pressure. These gases, depending on the composition and use are for the purpose of the household, and car gas.

PROPANE is a three carbon atoms having hunger - typically gas, extracted from petroleum products, remaked of oil or natural gas, multiplexed until transported fluid.

BHUTAN - 4 carbon atoms hunger as well as generally colorless gas.