Ingredient

NAPHTHAZARIN

✓ EU Allowed

Identification

CAS Number 475-38-7
EINECS / EC 207-495-4
CosIng Ref 99770
Chemical Name 5,8-dihydroxynaphthalene-1,4-dione
IUPAC Name
Formula C10H6O4
Mol. Weight 190.15 g/mol
SMILES C1=CC(=C2C(=O)C=CC(=O)C2=C1O)O
InChIKey RQNVIKXOOKXAJQ-UHFFFAOYSA-N

Function & Classification

Primary Function COLORANT
Secondary Functions HAIR CONDITIONING

EU Regulatory Status

🇪🇺
✓ Allowed — EU Reg. 1223/2009

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

Suppliers & Documents

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Documents

External Resources