The rules on the new hazard classes under are in force as of 20 April 2023.
For new substances on the market, companies need to comply with the new rules from 1 May 2025, whereas substances that have already been on the EU market, companies have until 1 November 2026 to comply.
Separate transition times apply for mixtures. New hazard classes apply from 1 May 2026 to new mixtures, whereas companies have until 1 May 2028 to update the classification and labelling for existing mixtures.
ECHA has published a new page on their website regarding the new hazard classes under CLP.