Slimes and sludges, copper electrolytic refining, decopperised, nickel sulfate
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
An industrial waste product containing nickel sulfate, a known carcinogen and severe skin sensitizer that is prohibited for cosmetic use in the EU.
This material is classified as an industrial by-product from copper electrolytic refining processes, specifically the nickel-rich fraction remaining after copper recovery. Nickel sulfate is classified as a Category 1B carcinogen (H350 - may cause cancer by inhalation), a Category 1 skin sensitizer (H317 - may cause allergic skin reaction), and a Category 3 reproductive toxicant under CLP Regulation (EC) No 1272/2008. The EU prohibits nickel and its compounds from intentional addition to cosmetic products under Regulation 1223/2009 Annex II.
Known concerns
- EU Annex II prohibited substance (nickel compounds)
- Category 1B carcinogen (H350)
- Known skin sensitizer - most common contact allergen
- Category 3 reproductive toxicant
- Prohibited in cosmetic products
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 — always read the physical product label and consult a healthcare professional for personal concerns.