Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
Tetrasodium 6-amino-4-hydroxy-3-[[7-sulphonato-4-[(4-sulphonatophenyl)azo]-1-naphthyl]azo]naphthalene-2,7-disulphonate

Inventory

EC number:
218-326-9
EC name:
Tetrasodium 6-amino-4-hydroxy-3-[[7-sulphonato-4-[(4-sulphonatophenyl)azo]-1-naphthyl]azo]naphthalene-2,7-disulphonate
CAS number:
2118-39-0
CAS number:
2118-39-0
Synonyms
Names:
Identifier:
Colour Index
CI 27755
Identifier:
common name
CI Food Black 2
Identifier:
other: InChl
1S/C26H19N5O12S4.4Na/c27-20-12-18-13(9-23(20)46(38,39)40)10-24(47(41,42)43)25(26(18)32)31-30-22-8-7-21(17-6-3-15(44(33)34)11-19(17)22)29-28-14-1-4-16(5-2-14)45(35,36)37;;;;/h1-12,32H,27H2,(H,33,34)(H,35,36,37)(H,38,39,40)(H,41,42,43);;;;/q;4*+1/p-4/b29-28+,31-30+;;;;
Identifier:
other: Molecular formula
C26H19N5O13S4.4Na
Identifier:
other: SMILES notation
c1(S(=O)(=O)[O-])c(\N=N\c2c3c(ccc(S(=O)[O-])c3)c(\N=N\c3ccc(S(=O)(=O)[O-])cc3)cc2)c(O)c2c(c1)cc(S(=O)(=O)[O--])c(N)c2.[Na+].[Na+].[Na+].[Na+]

Molecular and structural information

Molecular formula:
C26H15N5Na4O12S4
Molecular weight:
809.651
SMILES notation:
c1(S(=O)(=O)[O-])c(\N=N\c2c3c(ccc(S(=O)[O-])c3)c(\N=N\c3ccc(S(=O)(=O)[O-])cc3)cc2)c(O)c2c(c1)cc(S(=O)(=O)[O-])c(N)c2.[Na+].[Na+].[Na+].[Na+]
InChl:
SMBAGGHBUKLZPQ-IDOXDSHBSA-J
Structural formula:
Chemical structure

Related substances