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Fluorescein under UV illumination

Fluorescein is an organic compound and dye. It is based on xanthene and belongs to triarylmethine dye family.

It is available as a dark orange/red powder and used in water and alcohol. It is widely used as a fluorescent tracer. The color of its solutions is green by reflection and orange by transmission.[1]

References[change | change source]

  1. Sjöback, Robert; Nygren, Jan; Kubista, Mikael (1995-06-01). "Absorption and fluorescence properties of fluorescein". Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 51 (6): L7–L21. Bibcode:1995AcSpA..51L...7S. doi:10.1016/0584-8539(95)01421-P. ISSN 1386-1425.