What are ECHA’s new CLH consultations and Butyrolactone classification intention?
On 1 July 2026, the European Chemicals Agency (ECHA) announced the launch of two public consultations on proposals for Harmonised Classification and Labelling (CLH) under the Classification, Labelling and Packaging (CLP) Regulation (EC) No 1272/2008. The consultations concern Dimethyl Imidazolidinone and Benzyl Benzoate, while ECHA also published a new classification intention for Butyrolactone, a substance used in several industrial applications, including as a fragrance ingredient.
What is harmonised classification and labelling (CLH)?
The CLH process aims to ensure that hazardous substances are classified consistently throughout the European Union. Unlike self-classification by manufacturers or importers, a harmonised classification is legally binding and must be applied by all suppliers placing the substance on the EU market. Such classifications play a key role in hazard communication, influencing product labels, Safety Data Sheets (SDS), and downstream regulatory obligations.
How does the ECHA harmonised classification and labelling (CLH) process work?
- Publication of a CLH proposal marks the beginning of a public consultation.
- Stakeholders—including manufacturers, downstream users, industry associations, researchers, and public authorities—may submit scientific evidence, toxicological data, or comments relevant to the proposed hazard classification.
- Once the consultation closes, ECHA’s Committee for Risk Assessment (RAC) evaluates all available information before adopting a scientific opinion.
- The European Commission then considers this opinion when deciding whether to amend Annex VI of the CLP Regulation.
Why is Benzyl Benzoate important for cosmetic regulatory compliance?
Among the substances under consultation, Benzyl Benzoate is particularly relevant to the cosmetics sector. Widely used as a fragrance ingredient and solvent, it is already subject to specific labelling requirements under the Cosmetics Regulation (EC) No 1223/2009 when present above established thresholds as a fragrance allergen. Any future changes to its harmonised classification could therefore have implications for cosmetic product safety assessments, Product Information Files (PIFs), Cosmetic Product Safety Reports (CPSRs), and overall regulatory compliance.
What does the Butyrolactone CLH intention mean?
The announcement concerning Butyrolactone represents an earlier stage of the regulatory process. A published Classification and Labelling Intention (CLH intention) indicates that a Member State plans to prepare a harmonised classification dossier, although no formal proposal or public consultation has yet been initiated. Nevertheless, the publication of a CLH intention provides valuable early warning to industry, allowing companies to begin assessing potential impacts on product formulations and regulatory documentation.
Key takeaways: monitoring CLH proposals and classification intentions
For manufacturers, importers, and downstream users, these developments highlight the importance of continuous regulatory monitoring. Even before a final decision is adopted, tracking CLH proposals and classification intentions allows companies to anticipate future compliance obligations, review ingredient portfolios, and prepare for possible updates to hazard communication and risk management measures.
