Definition of Disperse dye

[Tanvir Ahmed Chowdhury]

The term ‘disperse dyes’ have been applied to organic coloring substances, which are free from ionizing groups are of low water solubility and are suitable for dyeing hydrophobic textile mils from colloid dispersion.
It is a special class of dyestuff which is used for dyeing man-made fibers eg acetate, polyamide, polyesters etc.
The dye is so called because it is non soluble, non ionic dye and molecularly dispersed, farther dispersing agents are used with the dye. The size of the dye molecule is very small.