Isobutylene (C4H8)

Isobutylene is a colourless gas with a faint petroleum-like odour. For transportation, it may be stenched. It is shipped as a liquefied gas under its vapour pressure. Contact with the liquid can cause frostbite. It is easily ignited. Its vapors are heavier than air and a flame can flash back to the source of the leak very easily. The leak can either be a liquid or vapour leak. It can asphyxiate by the displacement of air. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. It is used in the production of isooctane, a high-octane aviation gasoline.

Effects on Health

Inhalation of moderate concentrations causes dizziness, drowsiness, and unconsciousness. Contact with eyes or skin may irritate; the liquid may cause frostbite.

CAS number: 115-11-7