Ingredient

Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate and its unsoluble barium, strontium and zirconium lakes, salts and pigments

⚠ EU Restricted

Identification

CAS Number 633-96-5
EINECS / EC 211-199-0
CosIng Ref 30408
Chemical Name sodium 4-[(2-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonate
IUPAC Name
Formula C16H11N2NaO4S
Mol. Weight 350.3 g/mol
SMILES C1=CC=C2C(=C1)C=CC(=C2N=NC3=CC=C(C=C3)S(=O)(=O)[O-])O.[Na+]
InChIKey CQPFMGBJSMSXLP-UHFFFAOYSA-M

Function & Classification

EU Regulatory Status

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

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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