Disodium 6-hydroxy-5-[(2-methoxy-4-sulphonato-m-tolyl)azo]naphthalene-2-sulphonate (15); CI 16035. (see note 17)
⚠ EU RestrictedIdentification
CAS Number 25956-17-6
EINECS / EC 247-368-0
CosIng Ref 87675
Chemical Name disodium;6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate
IUPAC Name —
Formula C18H14N2Na2O8S2
Mol. Weight 496.4 g/mol
SMILES CC1=CC(=C(C=C1S(=O)(=O)[O-])OC)N=NC2=C(C=CC3=C2C=CC(=C3)S(=O)(=O)[O-])O.[Na+].[Na+]
InChIKey CEZCCHQBSQPRMU-UHFFFAOYSA-L
Function & Classification
Primary Function HAIR DYEING
EU Regulatory Status
Max Leave-on 0.4%
SCCS Opinion View SCCS opinion →
Safety Profile
No toxicology data available yet for this ingredient.
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NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
Usage level, pH range, solubility and addition phase not yet available.
Usage Level % · Addition Phase · Solubility
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