By definition Dyes
can be said
to be coloured, ionizing and aromatic
organic compounds which shows an affinity towards the substrate to which
it is being applied. It is
generally applied in
a solution that
is aqueous. Dyes
may also require
a mordant to better the fastness of the dye on the
material on which it is applied.
Classification of Dyes
Dyestuffs can be classified by many methods as follows:
- By their ionic (e.g. Cationic, anionic and non-ionic)
- By their fiber dye abilities (e.g. on cellulosic, protein, polyester, polyamide etc)
- By their names (e.g. Acid, direct, disperse, reactive, basic etc.)
- By their chemical structures (e.g. azo, anthraquinone, stilbene etc)
- By their origins (e.g. Natural, synthetic)
- By their colors (e.g. Red, green, black etc.)
Classification of Dyes by their Names
Though several classifications were available classification of dyes by their names is the
widely used one:
widely used one:
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