Is Fluorescein vegan?

Fluorescein

Vegan

Fluorescein is a synthetic organic xanthene dye available as a dark orange/red powder. It is used as a fluorescent tracer in numerous applications including ophthalmology, microscopy, and water tracing, and is slightly soluble in water and alcohol.

Also known as Solvent Yellow 94
CAS number 2321-07-5
CI number CI 45350
Last reviewed 3 June 2026

Sources

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