<unk> , also called n-butane, is the unbranched alkane with four carbon atoms, CH3CH2CH2CH3.<unk>  is also used as a collective term for n-butane together with its only other isomer, isobutane (also called methylpropane), CH(CH3)3.<unk> s are highly flammable, colorless, easily liquefied gases. The name<unk>  was derived by back-formation from the name of butyric acid.
Butane
Methane
Alkane
Bromoform
Acetylene
Benzene
Acrolein
Haloalkane