1-[(2-Chloro-4-nitrophenyl)azo]-2-naphthol (Pigment Red 4; CI 12085) and its salts when used as a substance in hair dye products
⚠ EU RestrictedIdentification
CAS Number 2814-77-9
EINECS / EC 220-562-2
CosIng Ref 87709
Chemical Name 1-[(2-chloro-4-nitrophenyl)diazenyl]naphthalen-2-ol
IUPAC Name —
Formula C16H10ClN3O3
Mol. Weight 327.72 g/mol
InChIKey XLTMWFMRJZDFFD-UHFFFAOYSA-N
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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