Black 7984

Black 7984^[1]
Names
	IUPAC name Tetrasodium 6-amino-4-hydroxy-3-[[7-sulfonato-4-[(4-sulfonatophenyl)azo]-1-naphthyl]azo]naphthalene-2,7-disulfonate
	Other names Food Black 2; C.I. 27755
Identifiers
CAS Number	2118-39-0 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.016.661
EC Number	218-326-9;
PubChem CID	14047491;
CompTox Dashboard (EPA)	DTXSID40879792 ;
	InChI InChI=1S/C26H19N5O13S4.4Na/c27-20-12-18-13(9-23(20)47(39,40)41)10-24(48(42,43)44)25(26(18)32)31-30-22-8-7-21(17-6-5-16(11-19(17)22)46(36,37)38)29-28-14-1-3-15(4-2-14)45(33,34)35;;;;/h1-12,30H,27H2,(H,33,34,35)(H,36,37,38)(H,39,40,41)(H,42,43,44);;;;/q;4*+1/p-4/b29-28?,31-25-;;;; Key: XAOPCPOUYMCJFA-PEEPPZCGSA-J;
	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+];
Properties
Chemical formula	C26H15N5Na4O13S4
Molar mass	825.63 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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 has not been permitted in the United States and in the European Union since 1984. It is also not permitted in Australia and Japan.

Black 7984 is also used in cosmetics.

References

^ European chemical Substances Information System

[1] European chemical Substances Information System

[1]

Names

IUPAC name Tetrasodium 6-amino-4-hydroxy-3-[[7-sulfonato-4-[(4-sulfonatophenyl)azo]-1-naphthyl]azo]naphthalene-2,7-disulfonate
Other names Food Black 2 C.I. 27755
Identifiers
CAS Number	2118-39-0
3D model (JSmol)	Interactive image
ECHA InfoCard	100.016.661
EC Number	218-326-9
PubChem CID	14047491
CompTox Dashboard (EPA)	DTXSID40879792
InChI InChI=1S/C26H19N5O13S4.4Na/c27-20-12-18-13(9-23(20)47(39,40)41)10-24(48(42,43)44)25(26(18)32)31-30-22-8-7-21(17-6-5-16(11-19(17)22)46(36,37)38)29-28-14-1-3-15(4-2-14)45(33,34)35;;;;/h1-12,30H,27H2,(H,33,34,35)(H,36,37,38)(H,39,40,41)(H,42,43,44);;;;/q;4*+1/p-4/b29-28?,31-25-;;;; Key: XAOPCPOUYMCJFA-PEEPPZCGSA-J
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+]
Properties
Chemical formula	C₂₆H₁₅N₅Na₄O₁₃S₄
Molar mass	825.63 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Black 7984

See also

References