Disodium 3-[(2,4-dimethyl-5-sulphonatophenyl)azo]-4-hydroxynaphthalene-1-sulphonate (Ponceaux SX; CI 14700) when used as a substance in hair dye products
⚠ EU RestrictedIdentification
CAS Number 4548-53-2
EINECS / EC 224-909-9
CosIng Ref 87667
Chemical Name disodium;3-[(2,4-dimethyl-5-sulfonatophenyl)diazenyl]-4-hydroxynaphthalene-1-sulfonate
IUPAC Name —
Formula C18H14N2Na2O7S2
Mol. Weight 480.4 g/mol
InChIKey ONTQJDKFANPPKK-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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