The European Chemicals Agency (ECHA) has opened new public consultations on proposals for harmonised classification and labelling (CLH) of chemical substances under the EU CLP Regulation.
These consultations allow stakeholders to provide scientific feedback on hazard assessments submitted by dossier proponents, ensuring transparency and robust evaluation before adoption.
Consultation Period & Scope
Each consultation runs for 60 days, enabling companies, scientific organizations, NGOs, and other interested parties to review and comment on proposed hazard classifications.
Comments may address:
• Substance identity and test data
• Hazard classes evaluated in the proposal
• Additional scientific evidence
• Data gaps or uncertainties
All submitted comments are published on ECHA’s website at the conclusion of the consultation period.
Substances Currently Under Review
Recent consultations include proposals for substances such as:
• 1-methylimidazole (EC 210-484-7, CAS 616-47-7): Assessment includes reproductive toxicity and multiple acute toxicity categories.
--> Consultation open until 19 December 2025
• Flutolanil (CAS 66332-96-5): Hazard classes include flammability, skin and eye effects, germ cell mutagenicity, and STOT.
--> Consultation ends 5 December 2025
• Imidazole Hydrobromide (CAS 101023-55-6): Hazards under consideration: Reproductive toxicity.
--> Consultation open until 19 December 2025
Industry Impact
Once harmonised classifications are adopted, they become legally binding across the EU. Companies handling affected substances may need to:
• Update labels and Safety Data Sheets (SDS)
• Adjust hazard communication systems
• Evaluate product formulations
• Notify supply chain partners of classification changes
Timely engagement ensures compliance and reduces operational disruption.
Recommendations for Businesses
Stakeholders are advised to:
• Review ECHA’s current CLH consultation list
• Analyse whether listed substances apply to their product portfolios
• Prepare and submit evidence-based comments
• Monitor RAC decisions and regulatory updates
Reference: ECHA CLH Consultation
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