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Disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate

CAS 2347-72-0
48

Safety score · 0–100

Moderate

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

About

A sulphonated naphthalene-based azo dye with no GHS hazard flags, but azo dyes as a class face increasing EU regulatory scrutiny due to potential amine-releases.

This disodium naphthalene sulfonate dye (CAS 2347-72-0) carries no classified hazard statements, making it comparatively less concerning than other azo colourants. However, the presence of the azo bond (–N=N–) means it falls within the EU's broader regulatory concern for synthetic azo dyes, which require monitoring for reductive cleavage to aromatic amines. No specific EU restriction or maximum concentration is listed in Regulation 1223/2009 Annex III for this compound.

Known concerns

  • Azo bond — theoretical amine-release under reducing skin conditions
  • No specific EU restriction found, but monitored category

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.