Carmoisine is a mono azo dye which primarily composes disodium 4 hydroxy-3-Naphtylene-1-Sulfonate.
Synonyms: C.I.Food Red # 3| Molecular Description | Composition |
|---|---|
| Total colour/Assay, percent by Mass, Min. | 85 |
| Water-insoluble matter, percent by mass, Max. | 0.2 |
| Combined ether extracts, percent by mass, Max. | 0.2 |
| Subsidiary dyes, percent by mass, Max. | 2 |
| Dye intermediates, percent by mass, Max. 1 -naphthylamine-4-sulfonic acid. 1 -napthol-4-sulfonic acid. | 0.5 |
| Lead, mg/kg, Max. | 10 |
| Arsenic, mg/kg, Max. | 3 |
| Heavy metals, (as pb) mg/kg, Max. | 40 |
| Mercury, mg/kg, Max. | 1 |
| Cadmium, mg/kg, Max. | 1 |