Ingredient

Nigrosine (CI 50420) when used as a substance in hair dye products

⚠ EU Restricted

Identification

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
SMILES C1=CC=C(C=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)[N+](=O)[O-])N)O.[Na+].[Na+]
InChIKey AOMZHDJXSYHPKS-UHFFFAOYSA-L

Function & Classification

EU Regulatory Status

🇪🇺
⚠ Restricted — EU Reg. 1223/2009 II

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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Documents

External Resources