2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-((2-methylphenyl)azo)- and its salts, when used as a substance in hair dye products
⚠ EU RestrictedIdentification
CAS Number 6441-93-6
EINECS / EC 229-231-7
CosIng Ref 31140
Chemical Name disodium;5-acetamido-4-hydroxy-3-[(2-methylphenyl)diazenyl]naphthalene-2,7-disulfonate
IUPAC Name —
Formula C19H15N3Na2O8S2
Mol. Weight 523.5 g/mol
InChIKey LGWXIBBJZQOXSO-UHFFFAOYSA-L
Function & Classification
EU Regulatory Status
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
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Usage Level % · Addition Phase · Solubility
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