Other
PHENYL MERCURIC BORATE
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
An organomercury compound used historically as a preservative but now completely prohibited in cosmetic products under EU Annex V/17 due to mercury's extreme toxicity profile.
Phenyl Mercuric Borate is a metallo-organic mercury compound listed in EU Cosmetics Regulation Annex V/17 (preservatives which are prohibited). Mercury and mercury compounds are banned from cosmetic products in the EU due to their extreme toxicity, bioaccumulation, and environmental persistence. The phenylmercury moiety releases mercury ions which are highly toxic to neurological, renal, and immune systems. This compound has no safe use in cosmetic formulations whatsoever.
Known concerns
- EU Annex V/17 - completely prohibited preservative
- Extremely toxic mercury compound
- Neurotoxic, nephrotoxic, and immunotoxic
- Bioaccumulative and environmentally persistent
- No safe concentration for cosmetic use
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related others
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.