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2,7-NAPHTHALENEDIOL

CAS 582-17-2
48

Safety score · 0–100

Moderate

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

About

2,7-naphthalenediol is a cosmetic ingredient. Exercise caution due to limited available safety data.

2,7-Naphthalenediol (CAS 582-17-2) is listed in EU Annex III/216 under Regulation 1223/2009, placing it in the category of substances restricted for use in hair dye applications. Annex III/216 specifies conditions or concentration limits for this dihydroxynaphthalene in oxidative hair dye formulations. Dihydroxynaphthalenes are known for their potential to cause skin sensitisation and allergic contact dermatitis. Proper use within restricted conditions is required; home-use hair dye formulations have additional IFRA/RIFM safety requirements. Outside hair dye applications, it is not specifically restricted.

Known concerns

  • Listed in EU Annex III (restricted substances)
  • Skin sensitiser potential
  • Allergic contact dermatitis risk
  • Restricted to hair dye applications with specified conditions

References

EU

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.