110 GB Biocidal Active Substances are Postponed until 2027

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	CAS number	EC number	Product type	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
Hydrochloric acid	7647-01-0	231-595-7	PT02	30 April 2024	31 January 2027
Cholecalciferol	67-97-0	200-673-2	PT14	30 June 2024	31 January 2027
Difenacoum	56073-07-5	259-978-4	PT14	30 June 2024	31 January 2027
Bromadiolone	28772-56-7	249-205-9	PT14	30 June 2024	31 January 2027
Difethialone	104653-34-1	600-594-7	PT14	30 June 2024	31 January 2027
Brodifacoum	56073-10-0	259-980-5	PT14	30 June 2024	31 January 2027
Flocoumafen	90035-08-8	421-960-0	PT14	30 June 2024	31 January 2027
Coumatetralyl	5836-29-3	227-424-0	PT14	30 June 2024	31 January 2027
Hydrogen cyanide	74-90-8	200-821-6	PT08	30 September 2024	31 January 2027
Hydrogen cyanide	74-90-8	200-821-6	PT14	30 September 2024	31 January 2027
Hydrogen cyanide	74-90-8	200-821-6	PT18	30 September 2024	31 January 2027
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
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 March 2025	31 January 2027
Cypermethrin	52315-07-8	257-842-9	PT08	31 May 2025	31 January 2027
Dinotefuran	165252-70-0	605-399-0	PT18	31 May 2025	31 January 2027
IPBC	55406-53-6	259-627-5	PT06	30 June 2025	31 January 2027
Etofenprox	80844-07-1	407-980-2	PT18	30 June 2025	31 January 2027
Aluminium phosphide releasing phosphine	20859-73-8	244-088-0	PT20	30 June 2025	31 January 2027
Copper sulphate pentahydrate	7758-99-8	231-847-6	PT02	30 June 2025	31 January 2027
Indoxacarb	144171-61-9	604-398-2	PT18	30 June 2025	31 January 2027
N,N-diethyl-meta-toluamide (DEET)	134-62-3	205-149-7	PT19	31 July 2025	31 January 2027
Dazomet	533-74-4	208-576-7	PT08	31 July 2025	31 January 2027
Tebuconazole	107534-96-3	403-640-2	PT08	30 September 2025	31 January 2027
Spinosad	168316-95-8	434-300-1	PT18	31 October 2025	31 January 2027
IPBC	55406-53-6	259-627-5	PT08	31 December 2025	31 January 2027
Medetomidine	86347-14-0	811-718-6	PT21	31 December 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 June 2026	31 January 2027
DCOIT	64359-81-5	264-843-8	PT08	30 June 2026	31 January 2027
Alphachloralose	15879-93-3	240-016-7	PT14	24 July 2026	31 January 2027
Propiconazole	60207-90-1	262-104-4	PT08	24 July 2026	31 January 2027
Metofluthrin	240494-71-7	n/a	PT18	24 July 2026	31 January 2027
Aluminium phosphide releasing phosphine	20859-73-8	244-088-0	PT14	24 July 2026	31 January 2027
Boric acid	10043-35-3	233-139-2	PT08	24 July 2026	31 January 2027
Sulphuryl difluoride (sulfuryl fluoride)	2699-79-8	220-281-5	PT08	24 July 2026	31 January 2027
Sulphuryl difluoride (sulfuryl fluoride)	2699-79-8	220-281-5	PT18	24 July 2026	31 January 2027
Deltamethrin	52918-63-5	258-256-6	PT18	30 September 2026	31 January 2027
Bacillus thuringiensis subsp. israelensis Serotype H14, Strain AM65-52	n/a	n/a	PT18	30 September 2026	31 January 2027
Lambda-cyhalothrin	91465-08-6	415-130-7	PT18	30 September 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.

If you need any assistance or have any questions, please get in touch with us via service@hfoushi.com.

Further Information

HSE Notice