DIRECT BLACK 51
⚠ EU RestrictedIdentification
CAS Number 3442-21-5
EINECS / EC 222-351-0
CosIng Ref 33564
Chemical Name disodium;6-amino-3-[[4-[(3-carboxy-4-hydroxyphenyl)diazenyl]naphthalen-1-yl]diazenyl]-4-oxidonaphthalene-2-sulfonate
IUPAC Name —
Formula C27H17N5Na2O7S
Mol. Weight 601.5 g/mol
InChIKey DSCVOQXQGTYXMV-UHFFFAOYSA-L
Function & Classification
Primary Function HAIR DYEING
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
Suppliers & Documents
Documents