In February 2024, UK‘s Health and Safety Executive (HSE) announced that the expiry date of all biocide active substances expiring between 1 January 2024 and 31 December 2026 would be extended to 31 January 2027. This amendment impacts up to 110 active substances, with the expiration dates of 46 active substances formally prolonged.

Details of these 46 substances:
Active substance name | Inombolo yeCAS | Inombolo yeEC | uhlobo Product | Previous expiry date | New expiry date |
---|---|---|---|---|---|
Copper (II) hydroxide | 20427-59-2 | 243-815-9 | PT08 | 31 January 2024 | 31 January 2027 |
Copper (II) oxide | 1317-38-0 | 215-269-1 | PT08 | 31 January 2024 | 31 January 2027 |
Basic Copper carbonate | 12069-69-1 | 235-113-6 | PT08 | 31 January 2024 | 31 January 2027 |
Ihydrochloric acid | 7647-01-0 | 231-595-7 | PT02 | 30 April 2024 | 31 January 2027 |
Cholecalciferol | 67-97-0 | 200-673-2 | PT14 | 30 Juni 2024 | 31 January 2027 |
Difenacoum | 56073-07-5 | 259-978-4 | PT14 | 30 Juni 2024 | 31 January 2027 |
Bromadiolone | 28772-56-7 | 249-205-9 | PT14 | 30 Juni 2024 | 31 January 2027 |
I-Difethialone | 104653-34-1 | 600-594-7 | PT14 | 30 Juni 2024 | 31 January 2027 |
Brodifacoum | 56073-10-0 | 259-980-5 | PT14 | 30 Juni 2024 | 31 January 2027 |
Flocoumafen | 90035-08-8 | 421-960-0 | PT14 | 30 Juni 2024 | 31 January 2027 |
Coumatetralyl | 5836-29-3 | 227-424-0 | PT14 | 30 Juni 2024 | 31 January 2027 |
Hydrogen cyanide | 74-90-8 | 200-821-6 | PT08 | 30 Septemba 2024 | 31 January 2027 |
Hydrogen cyanide | 74-90-8 | 200-821-6 | PT14 | 30 Septemba 2024 | 31 January 2027 |
Hydrogen cyanide | 74-90-8 | 200-821-6 | PT18 | 30 Septemba 2024 | 31 January 2027 |
I-Pyriproxyfen | 95737-68-1 | 429-800-1 | PT18 | 31 January 2025 | 31 January 2027 |
ADBAC/BKC (C12-16) | 68424-85-1 | 270-325-2 | PT08 | 31 January 2025 | 31 January 2027 |
DDAC | 7173-51-5 | 230-525-2 | PT08 | 31 January 2025 | 31 January 2027 |
I-formaldehyde | 50-00-0 | 200-001-8 | PT03 | 31 January 2025 | 31 January 2027 |
Magnesium phosphide releasing phosphine (Trimagnesium diphosphide) | 12057-74-8 | 235-023-7 | PT18 | 31 January 2025 | 31 January 2027 |
Tralopyril | 122454-29-9 | 602-784-5 | PT21 | 31 Matshi 2025 | 31 January 2027 |
ICypermethrin | 52315-07-8 | 257-842-9 | PT08 | 31 May 2025 | 31 January 2027 |
UDinotefuran | 165252-70-0 | 605-399-0 | PT18 | 31 May 2025 | 31 January 2027 |
IPBC | 55406-53-6 | 259-627-5 | PT06 | 30 Juni 2025 | 31 January 2027 |
Etofenprox | 80844-07-1 | 407-980-2 | PT18 | 30 Juni 2025 | 31 January 2027 |
I-aluminium phosphide releasing phosphine | 20859-73-8 | 244-088-0 | PT20 | 30 Juni 2025 | 31 January 2027 |
I-sulphate yobhedu ipentahydrate | 7758-99-8 | 231-847-6 | PT02 | 30 Juni 2025 | 31 January 2027 |
Indoxacarb | 144171-61-9 | 604-398-2 | PT18 | 30 Juni 2025 | 31 January 2027 |
N,N-diethyl-meta- toluamide (DEET) | 134-62-3 | 205-149-7 | PT19 | 31 Julayi 2025 | 31 January 2027 |
Dazomet | 533-74-4 | 208-576-7 | PT08 | 31 Julayi 2025 | 31 January 2027 |
Tebuconazole | 107534-96-3 | 403-640-2 | PT08 | 30 Septemba 2025 | 31 January 2027 |
Ispinosad | 168316-95-8 | 434-300-1 | PT18 | 31 October 2025 | 31 January 2027 |
IPBC | 55406-53-6 | 259-627-5 | PT08 | 31 Disemba 2025 | 31 January 2027 |
Medetomidine | 86347-14-0 | 811-718-6 | PT21 | 31 Disemba 2025 | 31 January 2027 |
DDACarbonate | 894406-76-9 | 451-900-9 | PT08 | 31 January 2026 | 31 January 2027 |
Imidacloprid | 138261-41-3 | 428-040-8 | PT18 | 30 Juni 2026 | 31 January 2027 |
I-DCOIT | 64359-81-5 | 264-843-8 | PT08 | 30 Juni 2026 | 31 January 2027 |
Alphachloralose | 15879-93-3 | 240-016-7 | PT14 | 24 Julayi 2026 | 31 January 2027 |
Propiconazole | 60207-90-1 | 262-104-4 | PT08 | 24 Julayi 2026 | 31 January 2027 |
Metofluthrin | 240494-71-7 | n / A | PT18 | 24 Julayi 2026 | 31 January 2027 |
I-aluminium phosphide releasing phosphine | 20859-73-8 | 244-088-0 | PT14 | 24 Julayi 2026 | 31 January 2027 |
I-asidi ye-Boric | 10043-35-3 | 233-139-2 | PT08 | 24 Julayi 2026 | 31 January 2027 |
Sulphuryl difluoride (sulfuryl fluoride) | 2699-79-8 | 220-281-5 | PT08 | 24 Julayi 2026 | 31 January 2027 |
Sulphuryl difluoride (sulfuryl fluoride) | 2699-79-8 | 220-281-5 | PT18 | 24 Julayi 2026 | 31 January 2027 |
Deltamethrin | 52918-63-5 | 258-256-6 | PT18 | 30 Septemba 2026 | 31 January 2027 |
Bacillus thuringiensis subsp. israelensis Serotype H14, Strain AM65-52 | n / A | n / A | PT18 | 30 Septemba 2026 | 31 January 2027 |
ILambda-cyhalothrin | 91465-08-6 | 415-130-7 | PT18 | 30 Septemba 2026 | 31 January 2027 |
Active Substance Expiry Date under GB BPR
Under the governance of the Great Britain Biocidal Products Regulation (GB BPR), the use of active substances in biocidal products is strictly regulated. The GB BPR requires comprehensive assessments and approvals of these substances, covering toxicology, ecotoxicology, and efficacy before products are introduced to the market. Typically, an active substance receives a 10-year validity period upon authorization under the GB BPR, which can be extended following a thorough re-evaluation.
A renewal application is required after the expiry of the active substance’s validity period, and a rigorous reassessment of its safety and effectiveness is required to justify its extended use.
This proactive measure by the HSE provides crucial breathing space for relevant stakeholders to align their product portfolios and compliance frameworks with the evolving regulatory landscape. Chemradar will closely monitor HSE’s subsequent announcements and report on relevant developments.
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