Patent blue is a sodium compound of ammonium
hydroxide belonging to the family of triarylmethane.
Synonyms: C.I.Food Brown #5
| No. |
Molecular Description |
Composition |
| 1) |
Total colour/Assay, percent by Mass, min. |
85.00 |
| 2) |
Water-insoluble matter, percent by mass, Max. |
00.20 |
| 3) |
Combined ether extracts, percent by mass, Max. |
00.20 |
| 4) |
Subsidiary dyes, percent by mass, Max. |
02.00 |
| 5) |
Dye intermediates, percent by mass,
max. Leuco base. |
00.50
04.00 |
| 6) |
Unsulfonated primary aromatic
amine (calculated as aniline) percent by mass, max. |
00.01 |
| 7) |
Lead, mg/kg, Max. |
10.00 |
| 8) |
Arsenic, mg/kg, Max. |
03.00 |
| 9) |
Heavy metals, (as pb) mg/kg, max. |
40.00 |
| 10) |
Mercury, mg/kg ,Max. |
01.00 |
| 11) |
Cadmium, mg/kg, Max. |
01.00 |
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