[3,3'-Dimethyl[1,1'-biphenyl]-4,4'-diyl]diammonium bis(hydrogen sulphate)
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A biphenyl-based cationic dye bearing structural alerts for carcinogenicity (azo bond + diamine) and classified as H350 suspected carcinogen.
This biphenyldiammonium sulfate is not listed in EU CosIng Annexes, indicating no approved cosmetic use. Its H350 (suspected carcinogen) and H411 (aquatic chronic toxicity) classifications are consistent with azo dye chemistry. The o-tolidine backbone is a known carcinogenic precursor in azo colorants, and the compound is structurally related to banned benzidine-based dyes. Its use in cosmetics is contraindicated under EU Regulation 1223/2009.
Known concerns
- H350 suspected carcinogen
- Not listed in EU CosIng
- Related to banned benzidine dyes
- Aquatic toxicity H411
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.