Q. Which gas is used in kitchen gas lighters?

Answer

Butane, a hydrocarbon, is a gas that flames very brightly, has no discernible odor, and may be liquefied with little effort. Regular applications include those of a heating fuel, a refrigerant, a propellant in aerosols, and a component in a number of other items. Cigarette lighters, refills for those lighters, and numerous aerosol sprays all contain butane. Along with disposable butane lighters and butane cartridges, cigarette lighter refill cans are the most widely abused butane product. A wide variety of aerosol products employ butane as a propellant because it is one of the most widely used propellants in both consumer and industrial aerosols.