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| SUNSET YELLOW FCF |
| SYNONYMS |
SUNSET YELLOW FCF*C.I.FOOD YELLOW3 * FD & C YELLOW 6 |
| DEFINITION |
Sunset Yellow FCF consists essentially of disodium 2-hydroxy-1(4 sulfonatophenylazo) naphthalene-6-sulfonate and subsidary colouring matters together with sodium chloride and/or sodium sulfate as the principal uncoloured components.
Sunset Yellow FCF is described as the sodium salt. The calcium and the potassium salt are also permitted. |
| CLASS |
Monoazo |
| COLOUR INDEX NO. |
15985 |
| EEC NUMBER |
E-110 |
| EINECS |
220-491-7 |
| CHEMICAL NAMES |
Disodium 2-hydroxy-1-(4-sulfonatophenylazo) naphthalene-6-sulfonate |
| CHEMICAL FORMULA |
C16H10N2Na2O7S2 |
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MOLECULAR WEIGHT
|
452.37 |
| ASSAY |
Content not less than 85% total colouring matters, calculated as the sodium salt; E 1% 1cm 555 at ca 485 nm in aqueous solution at pH7. |
| DESCRIPTION |
Orange-red powder |
IDENTIFICATION
a. Spectrometry
b. Orange solution in water |
Maximum in water at ca 485 nm at pH7 |
| Water Insoluble matter |
Not more than 0.2% |
| Subsidiary colouring matters |
Not more than 5.0% |
| Organic compounds other than colouring matters |
[4-Aminobenzene-1-sulfonic acid / 3-hydroxynaphthalene-2,7-disulfonic acid / 6-hydroxynaphthalene-2-sulfonic acid / 7-hydroxynaphthalene-1,3-disulfonic acid / 4,4'- diazoaminodi(benzene sulfonic acid) / 6,6' oxydi (naphthalene-2-sulfonic acid)] - Total not more than 0.5% |
| Unsulfonated primary aromatic amines |
Not more than 0.01% (Calculated as aniline) |
| Ether extractable matter |
Not more than 0.2% under neutral conditions |
| Arsenic |
Not more than 3 mg/kg. |
| Lead |
Not more than 10 mg/kg. |
| Mercury |
Not more than 1 mg/kg. |
| Cadmium |
Not more than 1 mg/kg. |
| Heavy metals (as Pb) |
Not more than 40 mg/kg. |
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