Ingredient
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CI 42045

✓ EU Allowed

Identification

CAS Number 129-17-9
EINECS / EC 204-934-1
CosIng Ref 32752
Chemical Name Hydrogen[4-[4-(diethylamino)-2',4'-disulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium,sodiumsalt,
Formula C27H31N2NaO6S2
Mol. Weight 566.7 g/mol

Function & Classification

Primary Function Cosmetic Colorant
Origin Synthetic

EU Regulatory Status

🇪🇺
✓ Allowed — EU Reg. 1223/2009 IV/59 (CI 42045) II/1355 (Acid Blue 1; CI 42045: when used as a substance in hair dye products)

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

INCIDecoder → EU CosIng →