Transz2butén

transz2butén is an organic chemical compound with the formula C4H8. It is one of the three isomers of butene, with the other two being cisz2butén and 1-butén. The "trans" prefix indicates that the two methyl groups are on opposite sides of the double bond, and the "2" signifies that the double bond is located between the second and third carbon atoms of the four-carbon chain.

This compound is a colorless gas at room temperature and pressure. It is flammable and has a characteristic odor. Transz2butén is an alkene, meaning it contains a carbon-carbon double bond. This double bond makes it reactive and capable of undergoing various addition reactions, such as hydrogenation, halogenation, and hydration.

Industrially, transz2butén is often produced as a byproduct of petroleum refining and steam cracking. It can be separated from other butene isomers through fractional distillation. Its primary uses are as a component in gasoline to increase octane rating and as a feedstock for the production of other chemicals. It can be polymerized to form polybutenes, although this is less common than for other alkenes. It is also used in research and development laboratories for organic synthesis.