dye is a coloured substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution and may require a mordant to improve the fastness of the dye on the fibre
For a colorfast tie dye a fiber reactive dye is needed such as Procion Dye from the Dharma Trading Company. Rit dye can be used but is not fiber reactive and not colorfast and the tie dye will fade...
An acridine dye can be only an azo dye if you have an azo bridge like -N=N- in your dye. For an acridine azo dye you must have a free amino group on it.Your question is not right formulated. I need...