Regulation ChangeLiveNews
European Commission closes EU proposal to nominate siloxanes D4, D5 and D6 under the Stockholm Convention
Stockholm Convention on Persistent Organic Pollutants (POPs)European Commission (Directorate-General for Environment)EU
Announced
Mar 9, 2026
Description
The European Commission’s ‘International agreements (Chemicals)’ page states that the Commission decided to close its proposal to nominate the siloxanes D4 (octamethylcyclotetrasiloxane), D5 (decamethylcyclopentasiloxane) and D6 (dodecamethylcyclohexasiloxane) under the Stockholm Convention. For compliance teams, this indicates the EU is no longer pursuing these substances for Stockholm Convention listing via its nomination route (at least as reflected in this update), which may affect expectations and internal regulatory watchlists for future global POP listing actions on these siloxanes.