Solution:

Butane is an organic compound with the formula (/ C{4}H{10} /) that is an alkane with four carbon atoms.

Butane is a gas at room temperature and atmospheric pressure.

The term may refer to either of two structural isomers, n-butane or isobutane (also called
“methylpropane”), or to a mixture of these isomers.

In the IUPAC nomenclature, however, “butane” refers only to the n-butane isomer (which is the isomer with the unbranched structure).

Butanes are highly flammable, colorless, easily liquefied gases that quickly vaporize at room temperature.

The name butane comes from the roots but- (from butyric acid, named after the Greek word for butter) and -ane.

It was discovered by the chemist Edward Frankland in 1849.[6] It was found dissolved in crude petroleum in 1864 by Edmund Ronalds, who was the first to describe its properties.

Normal butane can be used for gasoline blending, as a fuel gas, fragrance extraction solvent, either
alone or in a mixture with propane, and as a feedstock for the manufacture of ethylene and butadiene, a
key ingredient of synthetic rubber.

Isobutane is primarily used by refineries to enhance (increase) the octane number of motor gasoline.

When blended with propane and other hydrocarbons, it may be referred to commercially as LPG, for
liquefied petroleum gas. It is used as a petrol component, as a feedstock for the production of base
petrochemicals in steam cracking, as fuel for cigarette lighters and as a propellant in aerosol sprays such
as deodorants.