1-Butene (

IUPAC The International Union of Pure and Applied Chemistry (IUPAC ) is an international federation of National Adhering Organizations working for the advancement of the chemical sciences, especially by developing nomenclature and terminology. It is ...

name: But-1-ene, also known as 1-butylene) is the

organic compound Some chemical authorities define an organic compound as a chemical compound that contains a carbon–hydrogen or carbon–carbon bond; others consider an organic compound to be any chemical compound that contains carbon. For example, carbon-co ...

with the formula CH₃CH₂CH=CH₂. It is a colorless gas, but easily condensed to give a colorless liquid. It is classified as a linear

alpha-olefin In organic chemistry, terminal alkenes (alpha-olefins, α-olefins, or 1-alkenes) are a family of organic compounds which are alkenes (also known as olefins) with a chemical formula , distinguished by having a double bond at the primary, Alpha an ...

(terminal

alkene In organic chemistry, an alkene, or olefin, is a hydrocarbon containing a carbon–carbon double bond. The double bond may be internal or at the terminal position. Terminal alkenes are also known as Alpha-olefin, α-olefins. The Internationa ...

). It is one of the

isomers In chemistry, isomers are molecules or polyatomic ions with identical molecular formula – that is, the same number of atoms of each element – but distinct arrangements of atoms in space. ''Isomerism'' refers to the existence or possibili ...

butene Butene, also known as butylene, is an alkene with the formula . The word ''butene'' may refer to any of the individual compounds. They are colourless gases that are present in crude oil as a minor constituent in quantities that are too small for ...

(butylene). It is a precursor to diverse products.

Reactions

Polymerization of 1-butene gives

polybutylene Polybutylene (polybutene-1, poly(1-butene), PB-1) is a polyolefin or saturated polymer with the chemical formula (CH2CH(Et))n. Not be confused with polybutene, PB-1 is mainly used in piping. Production Polybutylene is produced by polymerisation ...

, which is used to make piping for domestic plumbing. Another application is as a

comonomer In polymer chemistry, a comonomer refers to a polymerizable precursor to a copolymer aside from the principal monomer. In some cases, only small amounts of a comonomer are employed, in other cases substantial amounts of comonomers are used. Furt ...

in the production of certain kinds of polyethylene, such as

linear low-density polyethylene Linear low-density polyethylene (LLDPE) is a substantially linear polymer (polyethylene), with significant numbers of short branches, commonly made by copolymerization of ethylene with longer-chain olefins. Linear low-density polyethylene differs ...

(LLDPE). It has also been used as a precursor to polypropylene resins,

butylene oxide Epoxybutane may refer to: * 1,2-Epoxybutane * 1,4-Epoxybutane (tetrahydrofuran) * 2,3-Epoxybutane 2,3-Epoxybutane is an organic compound with the formula CH3CH(O)CHCH3. It is an epoxide. The compound exists as three stereoisomers, a pair of e ...

, and

butanone Butanone, also known as methyl ethyl ketone (MEK) or ethyl methyl ketone, is an organic compound with the formula CH3C(O)CH2CH3. This colorless liquid ketone has a sharp, sweet odor reminiscent of acetone. It is produced industrially on a large s ...

Manufacturing

1-Butene is produced by separation from crude C₄ refinery streams and by

ethylene dimerization In organic chemistry, hydrovinylation is the formal insertion of an alkene into the C-H bond of ethylene (): : The more general reaction, hydroalkenylation, is the formal insertion of an alkene into the C-H bond of any terminal alkene. The react ...

. The former affords a mixture of 1-and 2-butenes, while the latter affords only the terminal alkene. It is distilled to give a very high purity product. An estimated 12 billion kilograms were produced in 2011.

References

{{DEFAULTSORT:Butene, 1- Alkenes es:Buteno#El 1-buteno