Butane is a propellant used to dispense a product from a container. It is often used in concert with other propellants such as isobutane and propane. While butane is commonly known for its use in heaters and lighters, as a propellant its energy comes from being compressed in a can rather than from being lit or heated.

Propane is a propellant used to dispense a product from a container. It is often used in concert with other propellants such as butane and isobutane. While propane is commonly known for its use as a fuel, for example for grills and portable stoves, as a propellant its energy comes from being compressed in a can rather than from being lit or heated.