Isobutane
Isobutane is a flammable hydrocarbon with growing use in the extraction industry. Isobutane is considered a liquefied petroleum gas, along with butane and propane. Isobutane is also used as a refrigerant (R-600a) to replace some of the more harmful CFC refrigerants like R-22 and R-134a. Isobutane is available in multiples sizes, traditionally in a liquid form.