TERMIUM Plus®

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

APROTIC [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2010-04-09

English

Subject field(s)
  • Chemistry
  • Paints and Varnishes (Industries)
DEF

[Is said of] a solvent that does not yield or accept a proton. [The definition was written according to source GOLCH-E].

French

Domaine(s)
  • Chimie
  • Peintures et vernis (Industries)
DEF

Se dit d'un solvant qui n'échange pas de protons avec les substances dissoutes.

OBS

Ni protogène, ni protophile (dans une situation donnée). En présence d'acides ou de bases de Brönsted extrêmement forts, des solvants normalement aprotiques peuvent accepter ou perdre un proton. Par exemple, l'acétonitrile est le plus souvent un solvant aprotique mais, il est protophile en présence d'acide sulfurique concentré et protogène en présence de tert-butylate de potassium. Des considérations semblables s'appliquent au benzène, au trichlorométhane, etc.

Spanish

Campo(s) temático(s)
  • Química
  • Pinturas y barnices (Industrias)
Save record 1

Record 2 1982-08-03

English

Subject field(s)
  • Chemistry
DEF

A type of solvent which does not offer or accept protons.

CONT

... with liquid ammonia as the solvent, one can define NH4+ as the acid ion and NH2-, as the base ion, and the former can be thought of as hydrogen ion combined with a molecule of the solvent. However, for a hydrogenless (aprotic) solvent, such as liquid sulfur dioxide, the extensions are less obvious.

Key term(s)
  • aprotic
  • hydrogenless solvent

French

Domaine(s)
  • Chimie
CONT

Aprotique : Se dit d'un solvant qui n'échange pas de protons avec les substances dissoutes.

CONT

Les réactions acide-base de Brönsted peuvent encore être étudiées dans des solvants aprotiques (comme l'hexane ou le tétrachlorure de carbone, qui n'ont virtuellement pas tendance à acquérir ou perdre des protons) [...]

Key term(s)
  • aprotique
  • solvant sans hydrogène

Spanish

Save record 2

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