Black PN is a black diazo dye.
Synonyms: C.I.Food Brown #1
Brilliant Black-A
Brilliant Black-BN
1) Total colour/Assay, percent by Mass, min. 80
2) Water-insoluble matter, percent by mass, Max. 0.2
3) Combined ether extracts, percent by mass, Max. 0.2
4) Subsidiary dyes, percent by mass, Max. 10
5) Dye intermediates, percent by mass, max. 0.8
6) Unsulfonated primary aromatic amine
(calculated as aniline) percent by mass, max. 0.01
7) Lead, mg/kg, Max. 10.00 8) Arsenic, mg/kg, Max. 3
9) Heavy metals, (as pb) mg/kg, max. 40
10) Mercury, mg/kg, Max. 1
11) Cadmium, mg/kg, Max.