As of 5 December 2025, the Regulation of the Minister of Development and Technology of 9 May 2025 on occupational health and safety in the production, use, storage and internal transport of organic peroxides entered into force, replacing the regulations in force since 1995.

Key changes introduced by the Regulation include:

1. the classification of organic peroxides by type (A–F), in accordance with the principles set out in the EU CLP Regulation (Classification, Labelling, and Packaging), including the introduction of quantity and packaging limits for individual peroxide types;
2. requirements concerning storage facilities and storage methods for specific peroxide types, including mandatory temperature monitoring during storage and internal transport;
3. the specification of permissible equipment and means of transport;
4. requirements concerning the site on which facilities involved in the production, storage or warehousing of peroxides are located;
5. changes to the rules for conducting fire and explosion risk assessments related to the properties of peroxides and rules for safe handling of peroxides.

These changes will affect the majority of companies in the chemical industry, as well as facilities that use organic peroxides in technological processes, synthesis, or cleaning operations.

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