Butane (C4H10) is a colorless, highly flammable gas with a faint petroleum-like odor, commonly used as a fuel in cigarette lighters, portable stoves, and as a component of liquefied petroleum gas (LPG). It is also used as a propellant in aerosols and in petrochemical processes. Butane’s high flammability makes it a significant fire and explosion hazard, especially when stored as a compressed gas or liquid under pressure. It is slightly soluble in water and can act as an asphyxiant in high concentrations. Proper ventilation and leak detection are essential during handling to prevent accidents.
