| Specification | |
| Product Name | Green S |
| Colour Shade |  |
| Synonyms | Food Green 4, Lissamine Green B |
| Chemical Name | Sodium 5-[4-dimethylamino-a-(4-dimethyliminocyclohexa-2,5-dienylidene)benzyl]- 6- hydroxy- 7- sulfonato - naphthalene- 2- sulfonate |
| Moleclar Formula | C27H25N2NaO7S2 |
| C.I. No | 44090 |
| C.I. Name | Acid Green 50 |
| EU/FDA Status | Approved in EU, Australia and New Zealand except Norway |
| CAS No. | 3087-16-9 |
| EINECS No. | 221-409-2 |
| E NUMBER | E-142 |
| Test | EEC (Limit) | |
| Total dye content, percent by mass on dry basis at 105 ± 1°C for 2 hrs.) | Min. | 80 |
| Loss on drying at 135°C and sodium chloride and sulphate, percent by mass | Max. | 20 |
| 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. | 1 |
|
Dye Intermediates, percent by mass 4,4_-bis(dimethylamino)-benzhydryl alcohol 4,4_-bis(dimethylamino)-benzophenone 3-hydroxynaphthalene-2,7-disulfonic acid |
Max. | 0.10 0.10 0.20 |
| Leuco base, percent by mass | Max. | 5 |
| Heavy metals Lead, Copper, Chromium, Arsenic, Mercury, Zinc, Antimony, Nickel, Barium,(PPM) | Max. | 40 |
| Arsenic (mg/kg.) | Max. | 3 |
| Lead (mg/kg.) | Max. | 10 |
| Mercury (mg/kg.) | Max. | 1 |
| Cadmium (mg/kg.) | Max. | 1 |
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