Uses. It is used to dye polyacrylonitrile fibers. Pararosaniline is used as a colorimetric test for aldehydes, in the Schiff test. It is the only basic fuchsine component suitable for making the aldehyde-fuchsine stain for pancreatic islet beta cells.
Fuschsine or rosaniline hydrochloride is a magenta-colored dye with a chemical formula C20H20N3·HCl, which is decolorized by
The basic fuchsin is a cationic triphenylmethane dye used for the detection of acid-fast bacilli and is commonly used in the Ziehl Neelsen staining technique. It stains mucopolysaccharides and glycoproteins. It can also be used to track proteins in acidic pH systems.