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2,6-BIS-(2-HYDROXYETHOXY)-3,5-PYRIDINEDIAMINE HCL

CAS 117907-42-3
52

Safety score · 0–100

Moderate

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

An aromatic diamine salt used as a hair dye intermediate, restricted under EU Annex III entry 1215 for oxidative hair colouring products with specific concentration and labelling requirements.

This aromatic diamine hydrochloride is used as a coupling agent or primary intermediate in oxidative (permanent) hair dye formulations. EU Annex III entry 1215 restricts its use to hair dye applications only, requiring a maximum concentration limit, specific labelling for allergy-prone consumers, and prohibition in moustache and eyebrow products. Like other aromatic diamines, it carries potential for skin sensitisation and requires careful handling during formulation.

Known concerns

  • EU Annex III restricted (entry III/1215) - hair dye use only
  • Aromatic amine - potential for sensitisation
  • May contribute to nitrosamine formation
  • Restricted in leave-on and sprayable cosmetic products

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, so always read the physical product label and consult a healthcare professional for personal concerns.