Fuchsine or rosaniline hydrochloride is a magenta dye with chemical formula 173·H and CAS number 569-61-9. It becomes magenta when dissolved in water; as a solid, it forms dark green crystals. Its inventor, the 19th century French company Renard , named the dye after the German translation of the company's name, fuchs (fox).
As well as dying textiles, fuchsine is used to stain bacteria and sometimes as a disinfectant.
See also