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Chelating Agent

OXYQUINOLINE SULFATE

CAS 134-31-6 Updated
42

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

An 8-hydroxyquinoline salt used as a chelator and stabiliser in hair-colour formulas. EU-restricted with reproductive-toxicity warnings, so it is limited to specific concentrations and product types.

Function

ANTIMICROBIALCHELATING

Skin benefits

  • Strong metal chelator
  • Helps stabilise hydrogen-peroxide formulas
  • Mild antimicrobial activity
  • Used in hair colour and oxidative products

Known concerns

  • Reproductive toxicity flag in PubChem GHS
  • Restricted in EU cosmetic Annex III
  • Possible allergic contact dermatitis
  • Limited use levels imposed by SCCS

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related chelating agents

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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.