Basic fuchsin is a mixture of rosaniline, pararosaniline, new fuchsine and Magenta II.Formulations usable for making of Schiff reagent must have high content of pararosanilin.
Basic fuchsin is a magenta dye with chemical formula C20H19N3·HCl.It becomes magenta when dissolved in water; as a solid, it forms dark green crystals. As well as dying textiles, fuchsine is used to stain bacteria and sometimes as a disinfectant.