3,3'-Dichlorobenzidine dihydrogen bis(sulphate)

15

Avoid

CAS Number: 64969-34-2

About 3,3'-Dichlorobenzidine dihydrogen bis(sulphate)

3,3'-dichlorobenzidine Dihydrogen Bis(sulphate) is classified as a known carcinogen. It is restricted or banned in cosmetic products in most jurisdictions. Exercise caution due to limited available safety data.

Detailed Analysis

3,3'-Dichlorobenzidine is a known animal carcinogen and is classified as a suspected human carcinogen (IARC Group 2A). Its sulfate salt is used in azo pigment production. The compound is not listed on any EU Annex for cosmetic colorants and is effectively prohibited from cosmetic use. Any trace residual in azo pigments or intermediates would be of significant regulatory concern.

Known Concerns

  • ⚠ Known animal carcinogen (IARC Group 2A)
  • ⚠ Aromatic amine with structural alerts for bladder carcinogenicity
  • ⚠ Not authorised in EU cosmetic Annexes

Safety Score

15

Avoid

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.