Is Acid Red 1 vegetarian?
Acid Red 1
Vegetarian
Vegetarian
Vegan
Vegan
Azophloxine (Acid Red 1; Red 2G) is a synthetic red azo dye soluble in water and slightly soluble in glycerol. It is used as a food colorant and in histological staining, typically as a disodium salt.
| Also known as | Acid red 1, Acid Red 2G, Amidonaphthol red G, Azogeranin B, Azophloxine, Dinatrium-5-acetylamino-4-hydroxy-3-(phenylazo)naphthalin-2,7-disulfonat, Disodium 5-acetylamino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate, Food red 10, Red 2G |
|---|---|
| INCI name | Acid Red 1 |
| E number | E128 |
| INS number | 128 |
| CAS number | 3734-67-6 |
| EC number | 223-098-9 |
| CI number | CI 18050 |
| CosIng ID | 32731 |
| Last reviewed | 3 June 2026 |
An ingredient is considered vegetarian if it avoids components derived from killing an animal.
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