| Test | EEC (Limit) |
| Total colouring matters calculated as the sodium salt percent by mass | Min. | 70 |
| Water insoluble matter, percent by mass | Max. | 0.20 |
| Combined ether extract, percent by mass | Max. | 0.20 |
| Unsulfonated Primary aromatic amines, percent by mass (calculated as aniline) | Max. | 0.01 |
| Subsidiary dyes, percent by mass | Max. | 10 |
Total organic compound other than colouring matters, percent by mass.
4-aminonaphthalene-1-sulfonic acid | Max. | 0.70 |
| Heavy metals as pb(mg/kg.) | Max. | 40 |
| Arsenic, (mg/kg.) | Max. | 3 |
| Lead (mg/kg.) | Max. | 2 |
| Mercury (mg/kg.) | Max. | 1 |
| Cadmium (mg/kg.) | Max. | 1 |
