Brilliant Black BN, Brilliant Black PN, Brilliant Black A, Black PN, Food Black 1, Naphthol Black, C.I. Food Black 1, or C.I. 28440, is a synthetic black diazo dye. It is soluble in water. It usually comes as tetrasodium salt. It has the appearance of solid, fine powder or granules. Calcium and potassium salts are allowed as well.

When used as a food dye, its E number is E151. It is used in food decorations and coatings, desserts, sweets, ice cream, mustard, red fruit jams, soft drinks, flavored milk drinks, fish paste, lumpfish caviar and other foods.

• Brilliant Black PN concentration limits

E151 has been banned in the United States, Switzerland, Japan.^{[citation needed]} It is approved in the European Union.

• “EU Approved additives and E Numbers”. Food Standards Agency, UK.

It was banned in Norway until 2001 when it was unbanned due to trade relationships with other countries.^{[citation needed]}

It is used for staining animal by-products in category 2.^{[clarification needed]}

IUPAC name Tetrasodium (6Z)-4-acetamido-5-oxo-6-[[7-sulfonato-4-(4-sulfonatophenyl)azo-1-naphthyl]hydrazono]naphthalene-1,7-disulfonate

Other names C.I. Food Black 1; 1743 Black; Black PN; Blue Black BN; Brilliant Acid Black; C.I. 28440; Certicol Black PNW; Cilefa Black B; E 151; Edicol Supra Black BN; Hexacol Black PN; L Black 8000; Melan Black; Xylene Black F

References

1. Brilliant Black PN concentration limits
2. “EU Approved additives and E Numbers”. Food Standards Agency, UK.