| TEST | LIMIT |
| Total coloring matters calculated as the sodium salt, percent by mass. (Min) | 87.0 |
| Loss on drying at 135 °C, Percent by mass and chlorides & Sulphates express as sodium salts, percent by mass (Max) | 13.0 |
| Water insoluble matter, percent by mass. (Max) | 0.20 |
| Combined ether extract, percent by mass. (Max) | 0.20 |
| Inorganic iodides calculated as sodium iodide percent by mass | 0.10 |
| Subsidiary dyes, percent by mass. (Max) | 4.00 |
| Fluorescein (mg/kg.) (Max) | 20.0 |
Organic compounds other than coloring matters, percent by mass (Max)
(a)Tri-iodoresorcinol
(b)2-(2,4-dihydroxy-3,5-diodobenzoyl) benzoic acid | 0.20 0.20 |
| Arsenic, (mg/kg.) (Max) | 3.00 |
| Lead, (mg/kg.) (Max) | 2.00 |
| Mercury, (mg/kg.) (Max) | 1.00 |
| Cadmium, (mg/kg.) (Max) | 1.00 |
| Zinc, (mg/kg.) (Max) | 50.0 |
