Solvent Red 49 is the solvent-soluble base form of Rhodamine B, a xanthene dye renowned for its exceptionally brilliant, bluish-red (pink) shade and intense fluorescence. It is a high-performance colorant used in applications where maximum brightness and high visibility are critical. Its unique vibrancy makes it a staple in the manufacturing of fluorescent printing inks and for coloring specialty waxes and plastics.