Usually, Butane is a flammable gas, it burns very well.

It is the name given to a number of flammable gases, especially methane.

Hydrogen is a flammable gas, which is a safety concern if released from the engine.

At standard temperature and pressure it is a colorless flammable gas.

Isobutylene is a highly flammable gas and presents an explosion danger.

A Gasworks is an industrial plant for the production of flammable gas.

BP also said the crew should have redirected the flow of flammable gases.

Highly flammable gas exerts pressure of 900 pounds a square inch on the line.

Certainly it hadn't taken much to ignite the highly flammable gas.

It also makes toxic flammable gases when reacted with acids.