Is Solvent Black 3 vegetarian?
Solvent Black 3
Sudan Black B, also known as Solvent Black 3 or Fat Black HB, is a synthetic diazo azo dye used in histology to stain neutral triglycerides and lipids in frozen sections and some lipoproteins in paraffin sections. It appears as a dark brown to black powder and stains blue-black.
| Also known as | 2,3-dihydro-2,2-dimethyl-6-[[1-naphthyl-4-(phenylazo)]azo]-1H-perimidine (CI 26150), Fat Black HB, Solvent Black 3 |
|---|---|
| INCI name | Solvent Black 3 |
| CAS number | 4197-25-5 |
| EC number | 224-087-1 |
| CI number | CI 26150 |
| CosIng ID | 38148 |
| Last reviewed | 3 June 2026 |
An ingredient is considered vegetarian if it avoids components derived from killing an animal.
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