Is Acid Yellow 73 vegan?
Acid Yellow 73
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 | 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid, 2-(6-Hydroxy-3-oxo-(3H)xanthen-9-yl)benzoic acid, 208-253-0, 229-143-9, 3',6''-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]Xanthen]-3-one (CI 45350:1), Acid Yellow 73, Acid Yellow 73 sodium salt, Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate, Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate (CI 45350), Fluorescein Sodium, Fluoresceine sodium, Fluoresceine Sodium, Fluoreszein-Natrium, Säuregelb 73, Solvent Yellow 94, Uranin |
|---|---|
| INCI name | Acid Yellow 73 |
| CAS number | 518-47-8 |
| EC number | 219-031-8 |
| CI number | CI 45350 |
| CosIng ID | 87687 |
| Last reviewed | 3 June 2026 |
An ingredient is considered vegan if it contains no animal-derived components at any point in its production.
Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.
