Acid Orange 24 (CI 20170), when used as a substance in hair dye products
⚠ EU RestrictedIdentification
CAS Number 1320-07-6
EINECS / EC 215-296-9
CosIng Ref 29452
Chemical Name sodium 4-[(2Z)-2-[(5E)-5-[(2,4-dimethylphenyl)hydrazinylidene]-4,6-dioxocyclohex-2-en-1-ylidene]hydrazinyl]benzenesulfonate
IUPAC Name —
Formula C20H17N4NaO5S
Mol. Weight 448.4 g/mol
InChIKey VRDAELYOGRCZQD-NFLRKZIHSA-M
Function & Classification
EU Regulatory Status
SCCS Opinion View SCCS opinion →
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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