amphotère
- Domaine
-
- chimie
- Date
Définition :
Se dit d'un corps possédant des propriétés à la fois acides et basiques.
Note :
C'est le cas, à un degré variable avec la température et la réactivité des corps en présence, de la plupart des produits réfractaires dits « neutres ».
Terme :
- amphotère adj.
Traductions
-
anglais
Date :Définition
Denotes a substance having both acidic and basic properties and, such being the case, depends to some extent on tempertures and reactivity of the substances present in most so-called "neutral" refractories.
Having the property of reacting with either an acid or a base.Note :
Many oxides and salts have this ability (aluminum hydroxide, for example); it is also exhibited by some ion-exchange compounds and by complex substances such as proteins (polypeptides). Keratins such as wool, hair, and feathers are amphoteric, which is a distinct advantage in dyeing since they can accept both acidic and basic types of dyes.
Terme :
- amphoteric