Black PN Specifications

Product Name Black PN
Colour Shade
Synonyms Food Black 1, Brilliant Black PN, Brilliant Black A, Black PN, Naphthol Black
Chemical Name Tetrasodium 4-acetamido-5-hydroxy-6-[7-sulfonato-4- (4-sulfonatophenylazo)-1-naphthylazo] naphthalene-1,7- disulfonate
Molecular Formula C28H17N5Na4O14S4
C.I. No 28440
C.I. Name Food Brown 1
FDA Status ---
CAS No. 2519-30-4
EINECS No. 219-746-5
Test EEC (Limit)
Total colouring matters calculated as the sodium salt percent by mass Min. 80
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 Max. 0.01
Subsidiary dyes, percent by mass Max. 10
Total organic compound other than colouring matters, percent by mass
4-acetamido-5-hydroxynaphthalene- 1,7-disulfonic acid
4-amino-5-hydroxynaphthalene-1,7- disulfonic acid
8-aminonaphthalene-2-sulfonic acid
4,4 -diazoaminodi-(benzenesulfonic acid)
Max. 0.80
Heavy metals as pb(mg/kg.) 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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