Butane is gaseous alkane with four carbon atoms. Normal butane can be used for gasoline blending, as a fuel gas, fragrance extraction solvent, either alone or in a mixture with propane, and as a feedstock for the manufacture of ethylene and butadiene, a key ingredient of synthetic rubber. Butane is known to be a suffocating gas with a narcotic action. Inhalation of butane can cause euphoria, drowsiness, unconsciousness, asphyxia, cardiac arrhythmia, fluctuations in blood pressure and temporary memory loss, when abused directly from a highly pressurized container, and can result in death from asphyxiation and ventricular fibrillation. Abuse is frequent because butane is easily available and its sale is not restricted. Cases of sudden death in teenagers have been increasing since the 1980s , and over the past few years, there have been an increasing number of publications on the subject.