CHCH3CH2CH2CH3

CHCH3CH2CH2CH3 is the chemical formula for butane. Butane is an organic compound, specifically an alkane, with the formula C4H10. It is a highly flammable, colorless gas at room temperature and pressure. Butane is one of four isomers of C4H10, the others being isobutane, 1-butyne, and 2-butyne. Its straight-chain structure means that all four carbon atoms are linked in a continuous chain.

Butane is commonly found in liquefied petroleum gas (LPG), often mixed with propane. This mixture is widely used as a fuel for heating, cooking, and in vehicles. It is also used as a propellant in aerosol cans and as a refrigerant. In its pure form, it is used as a calibrant gas in laboratories and as a feedstock in the petrochemical industry for the production of other chemicals.

The production of butane primarily comes from natural gas processing and crude oil refining. It can be separated from natural gas liquids or produced during the fractional distillation of crude oil. Due to its volatility and flammability, proper storage and handling are essential to prevent accidents. Butane is a relatively simple hydrocarbon and is considered non-toxic in low concentrations, though it can act as a simple asphyxiant by displacing oxygen in enclosed spaces.