TERMIUM Plus®

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OLEFINES [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2007-07-18

English

Subject field(s)
  • Chemical Elements and Compounds
  • Aliphatic or Acyclic Hydrocarbons
DEF

olefins: Acyclic and cyclic hydrocarbons having one or more carbon-carbon double bonds, apart from the formal ones in aromatic compounds. The class olefins subsumes alkenes and cycloalkenes, and the corresponding polyenes. [IUPAC (International Union of Pure and Applied Chemistry) definition]

CONT

Olefins may be classified by whether the double bond is in a ring (cyclic) or a chain (acyclic, or aliphatic) or by the number of double bonds (monoolefin, diolefin, etc.). Rare in nature, olefins are obtained by the cracking of petroleum fractions at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemicals industry. They react by adding other chemical agents at the double bond to form derivatives or polymers.

OBS

olefin: The name comes from the term "olefiant gas," an early name for ethylene, meaning oil-forming.

PHR

Diolefin, monoolefin, mono-olefin.

Key term(s)
  • olefins
  • olefines

French

Domaine(s)
  • Éléments et composés chimiques
  • Hydrocarbures aliphatiques ou acycliques
DEF

Hydrocarbure acyclique ou cyclique ayant une ou plusieurs double(s) liaison(s) carbone-carbone, à l'exception des doubles liaisons formelles des composés aromatiques. La classe des oléfines comprend les alcènes, les cycloalcènes et les polyènes correspondants. [Définition de l'UICPA (Union internationale de chimie pure et appliquée)]

PHR

Dioléfine, monooléfine, mono-oléfine.

Key term(s)
  • oléfines

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Hidrocarburos alifáticos o acíclicos
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