2,6-BIS-(2-HYDROXYETHOXY)-3,5-PYRIDINEDIAMINE HCL
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
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 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.