Nigrosine (CI 50420) when used as a substance in hair dye products
⚠ EU RestrictedIdentification
CAS Number 8005-03-6
EINECS / EC -
CosIng Ref 87692
Chemical Name disodium;4-amino-5-hydroxy-3-[(4-nitrophenyl)diazenyl]-6-phenyldiazenylnaphthalene-2,7-disulfonate
IUPAC Name —
Formula C22H14N6Na2O9S2
Mol. Weight 616.5 g/mol
InChIKey AOMZHDJXSYHPKS-UHFFFAOYSA-L
Function & Classification
EU Regulatory Status
Safety Profile
No toxicology data available yet for this ingredient.
Check SCCS opinions or CIR reports for published safety assessments.
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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