Is Solvent Red 24 vegan?
Solvent Red 24
Sudan IV is a lysochrome (fat-soluble) diazo dye used for the staining of lipids, triglycerides, and lipoproteins on frozen and paraffin sections. It appears as reddish-brown crystals with a melting point of 199 °C and maximum absorption at 520 nm. It is a synthetic organic dye derived entirely from non-animal sources.
| Also known as | 1-(2-Methyl-4-(2-methylphenylazo)phenylazo)-2-naphthol, 2',3-Dimethyl-4-(2-Hydroxynaphthylazo) Azobenzene, Biebrich Scarlet R, C.I. Solvent Red 24, Scarlet R, Scharlach R, Solvent Red 24 |
|---|---|
| INCI name | Solvent Red 24 |
| CAS number | 85-83-6 |
| EC number | 201-635-8 |
| CI number | CI 26105 |
| CosIng ID | 84607 |
| Last reviewed | 3 June 2026 |
An ingredient is considered vegan if it contains no animal-derived components at any point in its production.
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