Functionality (chemistry)

Monofunctional compounds
Essigsäuremethylester

Methyl acetate

Thiophenol

Thiophenol

Ethylamin

Ethylamine

Difunctional compounds
Malonsäure

Malonic acid

2-Aminoethanol

Ethanolamine

Glycin

Glycine

Trifunctional compounds
Glycerin

Glycerol

(R)-Cystein

(R)-Cysteine

In chemistry, functionality is the presence of functional groups in a molecule. A monofunctional molecule possesses one functional group, a bifunctional (or difunctional) two, a trifunctional three, and so forth. In organic chemistry (and other fields of chemistry), a molecule's functionality has a decisive influence on its reactivity.

In polymer chemistry, the functionality of a monomer refers to its number of polymerizable groups, and affects the formation and the degree of crosslinking of polymers.


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