Butane or n-butane is an alkane with the formula C4H10. Butane is a highly flammable, colorless, easily liquefied gas that quickly vaporizes at room temperature and pressure. Butane gas canisters are a great cost-effective, easy-to-use and lightweight option to power a stove or heating appliance while camping. If used or stored incorrectly gas canisters can build up pressure and explode. It is typically used for Camping Stove fuel for cigarette lighters and portable stoves, a propellant in aerosols, a heating fuel, a refrigerant, and in the manufacture of a wide range of products. Fuel for Cigarette Lighters. Portable Stoves. LPG Gas. A Refrigerant.