Abstract:
The art of dyeing is a branch of
applied chemistry in which a use of both
physical and chemical principle is made
in order to bring about a permanent
Union between the dyes and the textile
material. For dyeing the cotton yarn in
various shades, the art lies in colouring
the textiles in such a manner that the
colour may be fast or may not ordinarily
be removed by such operations as
working, rubbing, sunlight etc. to which
the textiles are usually subjected.