Black 7984

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Reference = [ [http://ecb.jrc.it/esis/index.php?GENRE=ECNO&ENTREE=218-326-9 European chemical Substances Information System] ]
ImageFile = Black 7984.png ImageSize = 250px
IUPACName = Tetrasodium 6-amino-4-hydroxy-3- [7-sulfonato-4- [(4-sulfonatophenyl)azo] -1-naphthyl] azo] naphthalene-2,7-disulfonate
OtherNames = Food Black 2
C.I. 27755
Section1 = Chembox Identifiers
CASNo = 2118-39-0
EINECS = 218-326-9
PubChem =
SMILES = [O-] S(C(C=C4)=CC=C4/N=N/C(C=C2)=C3C(C=C(S( [O-] )(=O)=O)C=C3)=C2/N=N/C1=C(S( [O-] )(=O)=O)C=C(C=C(S( [O-] )(=O)=O)C(N)=C5)C5=C1O)(=O)=O. [Na+] . [Na+] . [Na+] . [Na+]
Section2 = Chembox Properties
Formula = C₂₆H₁₉N₅Na₄O₁₃S₄
MolarMass = 733.69 g/mol
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Section3 = Chembox Hazards
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Black 7984, Food Black 2, or C.I. 27755, is a brown-to-black synthetic diazo dye. It is often used as the tetrasodium salt.

When used as a food dye, it has E number E152. Its use in food is discontinued in USA and EU since 1984. It is also not permitted in Australia and Japan.

Black 7984 is also used in cosmetics.

Black 7984 may cause allergic or intolerance reactions, particularly amongst those with an aspirin intolerance.Fact|date=September 2008 It is a histamine liberator, and may worsen the symptoms of asthma.Fact|date=September 2008It is one of the colorants that the Hyperactive Children's Support Group recommends be eliminated from the diet of children.Fact|date=September 2008

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