Basic dye is a cationic stain that will react with negatively charged materials. This dye is typically synthetic, acting as a base while also being an aniline dye. Although the base of their color is not water-soluble, it can be turned so by turning it into salt. While the fundamental dyes have excellent tinctorial strength and brightness, they are typically not light-fast. It reacts well with material that is anionic, or negatively charged because the basic dye is a stain that is cationic, or positively charged.
Alkylamino or amino groups serve as the auxochromes in fundamental dyes. A basic dye that was accidentally discovered was a synthetic dye. Basic dyes include, among others, methylene blue, crystal violet, basic fuchsin safranin, and others.
Basic dyes have a variety of benefits including a wide shade range, moderate substantivity, and decent brightness. High acid content, colored backwaters, poor shade stability, preferred dyeing, and very poor lightfastness are some of the drawbacks of basic dyes.
Basic dyes are often used to color jute, dried flowers, cut flowers, coir, and other materials. Basic dyes are frequently used to dye acrylic fibers. Acrylic Fibre is dyed using modified basic dyes because they are ideal for this material. Analysis of the Basic dyes' success will reveal that the negatively charged anions in the acrylic fiber are drawn to the positively charged cations of the Basic dyes. Anionic groups are affixed to acrylic polymers. Salt connections are produced by the cation and anion's interaction. Under typical dyeing circumstances, basic dyes certainly do not migrate in acrylic fibers.
Basic dyes are also popular for leather coloring since they mix readily with leather that has been vegetable tanned, eliminating the need for mordant. Papers are colored with basic dyes as well.