Brilliant Black BN (also known as 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 known as well.
Brilliant Black BN is approved in the European Union.[2] It has been banned in the United States[3] and Japan.[citation needed] Brilliant Black BN was banned in Norway until 2001 when it was unbanned due to trade relationships with other countries.[citation needed]