Trisodium 1-(1-naphthylazo)-2-hydroxynaphthalene-4',6,8-trisulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments
⚠ EU RestrictedIdentification
CAS Number 2611-82-7
EINECS / EC 220-036-2
CosIng Ref 30425
Chemical Name trisodium;7-hydroxy-8-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1,3-disulfonate
IUPAC Name —
Formula C20H11N2Na3O10S3
Mol. Weight 604.5 g/mol
SMILES C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])N=NC3=C(C=CC4=CC(=CC(=C43)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[Na+].[Na+].[Na+]
InChIKey SWGJCIMEBVHMTA-UHFFFAOYSA-K
Function & Classification
EU Regulatory Status
Conditions of Use Purity criteria as set out in Commission Directive 95/45/EC (E 124)
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Safety Profile
No toxicology data available yet for this ingredient.
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NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
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Usage Level % · Addition Phase · Solubility
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