AZO DYE


Meaning of AZO DYE in English

Any of a large class of synthetic organic compounds, dye s containing two nitrogen atoms joined by a double bond (see bonding , covalent bond ) in the form ―N=N― as part of their molecular structure.

More than half the dyes in commercial use are azo dyes. They are usually classed according to the fibres for which they are useful or the methods by which they are applied; direct dyes are absorbed from solution by the fibres, but others require a second solution (a mordant) or a second step before the colour is fast.

Britannica English dictionary.      Английский словарь Британика.