Information on regulating biocides in Great Britain
 

View as a webpage

Health and Safety Executive

Biocides ebulletin

Issued: 28 March 2025

This ebulletin contains information on regulating biocides in Great Britain (GB).

Active substances no longer supported in GB

Non-approval decisions to be taken for unsupported active substances in GB.

Following an opportunity for any person, company or task force/consortium to support the active substance/product type combinations listed in the GB Review Programme, no compliant notifications were received:

  • Reaction products of 5,5-dimethylhydantoin, 5-ethyl-5-methylhydantoin with bromine and chlorine (DCDMH) (CAS N/A EC N/A) in product type 11
  • Reaction products of 5,5-dimethylhydantoin, 5-ethyl-5-methylhydantoin with chlorine (DCEMH) (CAS 89415-87-2 EC 401-570-7) in product type 11


In cases where active substance/product type combinations are not supported, GB biocides regulations require that these active substance/product type combinations are subject to a GB non-approval decision.

Once a decision is taken, the active substances will no longer be able to be used in biocidal products of the relevant product type in GB. In addition articles treated with such products will no longer be able to be placed on the market in GB. HSE will provide separate updates on the decision and relevant phase-out periods.

Please note:

If you are aware of any disproportionate negative impacts that are likely to arise from the non-approval of the active substance/product type combinations listed, please contact us by 27 April 2025.

Health and Safety Executive - 2.2 Redgrave Court, Merton Road, Bootle, Merseyside L20 7HS