Biocides: EU active substance expiry dates postponed and renewal submission deadlines
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Issued: 30 April 2026

This ebulletin contains information on regulating biocides in Northern Ireland (NI).

EU active substance expiry dates postponed

Active substance expiry dates postponed whilst the renewal evaluations are completed in the EU.

For reasons beyond the control of the applicants, the approvals of the active substance/product type combinations listed were likely to expire before a decision could be taken on their renewal under the EU Biocidal Products Regulation (EU BPR).

To allow sufficient time for the renewal evaluation to be completed, a decision has been taken to postpone the expiry dates of the following approvals. This affects NI:

From 30 June 2026 to 31 December 2027

From 31 July 2026 to 31 July 2029

If you want to supply new biocidal products containing these active substances, you can still apply for EU BPR product authorisation. New products (including new trade names) must not be supplied in NI until product authorisation is granted.

HSE will provide separate updates on the renewal decisions when relevant.


Upcoming EU active substance renewal submission deadlines

Apply for active substance renewal by the relevant deadlines to keep products on the NI market.

Under the EU BPR, active substance approvals will expire unless a renewal application is submitted to ECHA at least 550 days before their expiry date.

The 550-day deadlines are coming up for the following active substance/product type combinations under EU BPR. This affects NI:

28 October 2026

  • calcium dihydroxide / calcium hydroxide / caustic lime / hydrated lime / slaked lime (CAS 1305-62-0 EC 215-137-3) in product types 2 and 3
  • calcium magnesium oxide / dolomitic lime (CAS 37247-91-9 EC 253-425-0) in product types 2 and 3
  • calcium magnesium tetrahydroxide / calcium magnesium hydroxide / hydrated dolomitic lime (CAS 39445-23-3 EC 254-454-1) in product types 2 and 3
  • calcium oxide / lime / burnt lime / quicklime (CAS 1305-78-8 EC 215-138-9) in product types 2 and 3
  • chlorocresol (CAS 59-50-7 EC 200-431-6) in product types 1, 2, 3, 6, 9 and 13
  • coco alkyltrimethylammonium chloride (ATMAC/TMAC) (CAS 61789-18-2 EC 263-038-9) in product type 8

28 October 2027

  • L-(+)-lactic acid (CAS 79-33-4 EC 201-196-2) in product types 2, 3 and 4
  • propan-1-ol (CAS 71-23-8 EC 200-746-9) in product types 1, 2 and 4

30 April 2027

  • pyrogenic, synthetic amorphous, nano, surface treated silicon dioxide (CAS 68909-20-6 EC 272-697-1) in product type 18
  • silicon dioxide kieselguhr (CAS 61790-53-2 EC 612-383-7) in product type 18

Any person, company or task force/consortium can support an active substance/product type combination for renewal – it doesn’t have to be the original supporter.

Check the EU Article 95 List to see who the original supporters were

If any of these active substance/product type combinations are important to you, consider contacting your supplier to let them know.

If a renewal application is not submitted for the above active substance/product type combinations under EU BPR, the approvals will expire. This means the active substances will no longer be able to be used in biocidal products of the relevant product types in NI.

In addition articles treated with such products will no longer be able to be placed on the market in NI.

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