TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ISOPRENO [2 records]

Record 1 2011-08-26

English

Subject field(s)
  • Chemical Elements and Compounds
  • Additives and Fillers (Rubber)
Universal entry(ies)
C5H8
formula, see observation
78-79-5
CAS number
DEF

The molecular unit of natural rubber, appearing under the form of a colorless, volatile liquid, insoluble in water, soluble in alcohol, ether and hydrocarbon solvents, used as a monomer for the manufacture of polyisoprene, as a chemical intermediate and a component of butyl rubber.

OBS

2-methylbuta-1,3-diene: form recommended by the IUPAC (International Union of Pure and Applied Chemistry) for the systematic name corresponding to the CAS number indicated on the present record.

OBS

isoprene: term adopted by Environment Canada; used in the list of pollutants measured in the National Air Pollution Surveillance Network (NAPS).

OBS

Also known under the following commercial designation: UN 1218.

OBS

Chemical formula: C5H8

Key term(s)
  • beta-methylbivinyl

French

Domaine(s)
  • Éléments et composés chimiques
  • Ingrédients (Caoutchouc)
Entrée(s) universelle(s)
C5H8
formula, see observation
78-79-5
CAS number
DEF

Carbure liquide polymérisable en un produit doué de haute élasticité (caoutchouc artificiel).

OBS

2-méthylbuta-1,3-diène : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée) pour le nom systématique correspondant au numéro CAS indiqué sur la présente fiche.

OBS

isoprène : terme retenu par Environnement Canada; utilisé dans la liste des polluants mesurés par le Réseau national de surveillance de la pollution atmosphérique (RNSPA).

OBS

Formule chimique : C5H8

Key term(s)
  • bêta-méthylbivinyle

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Aditivos y rellenos (Caucho)
Entrada(s) universal(es)
C5H8
formula, see observation
78-79-5
CAS number
OBS

Unidad molecular del caucho. Líquido volátil, incoloro. Insoluble en agua, soluble en alcohol y éter. Muy inflamable. Tóxico e irritante.

OBS

Fórmula química: C5H[susubíndice 8]

Save record 1

Record 2 2011-02-25

English

Subject field(s)
  • Chemical Elements and Compounds
  • Plant Biology
Universal entry(ies)
C15H24
formula, see observation
CONT

Because they are of lower volatility than the monoterpenes, sesquiterpenes ... are isolated from their natural sources by distillation with steam or by extraction. They are purified by vacuum fractional distillation or by chromatography. The sesquiterpenes demonstrate an even greater complexity of structure than the monoterpenes, and oxygenated sesquiterpenes are commonly encountered.

OBS

Chemical formula: C15H24

French

Domaine(s)
  • Éléments et composés chimiques
  • Biologie végétale
Entrée(s) universelle(s)
C15H24
formula, see observation
CONT

Intérêt des sesquiterpènes [...] Biologiquement, bon nombre de structures sesquiterpéniques sont des phytoalexines (c'est particulièrement vrai chez les Solanaceae); d'autres [...] semblent agir comme des régulateurs de croissance; d'autres enfin attirent les insectes [...] ou agissent à l'encontre de ceux-ci comme des facteurs antinutritifs [...]

OBS

Formule chimique : C15H24

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Biología vegetal
Entrada(s) universal(es)
C15H24
formula, see observation
CONT

Los sesquiterpenos son los terpenos de 15 carbonos(es decir, terpenoides de un monoterpenoide y medio). Como los monoterpenoides, muchos sesquiterpenoides están presentes en los aceites esenciales. Además muchos sesquiterpenoides actúan como fitoalexinas, compuestos antibióticos producidos por las plantas en respuesta a la aparición de microbios, y como inhibidores de la alimentación("antifeedant") de los herbívoros oportunistas. La hormona de las plantas llamada ácido abscísico es estructuralmente un sesquiterpeno, su precursor de 15 carbonos, la xantosina, no es sintetizada directamente de 3 unidades isopreno sino producida por un "cleavage" asimétrico de un carotenoide de 40 unidades.

OBS

Fórmula química: C15H24

Save record 2

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