The UK Department for Environment, Food & Rural Affairs (Defra) is inviting public and industry feedback on two substances, chlorinated paraffins and polyhalogenated dibenzo-p-dioxins and dibenzofurans (PXDD/Fs), being assessed as persistent organic pollutants (POPs). These chemicals, which are under review by the United Nations Stockholm Convention, have raised concerns over their environmental persistence and potential harm to human and ecological health. Stakeholders are encouraged to submit comments by 29 November 2024.
Background on Proposed POPs
Chlorinated Paraffins (MCCPs):
Medium-chain chlorinated paraffins (MCCPs), typically found in carbon chains ranging from C14 to C17, are widely used in industrial applications for their flame-retardant and plasticising properties. The POP Review Committee (POPRC) has noted the environmental risks associated with MCCPs, which are known to persist, bioaccumulate, and pose toxicity risks to aquatic life. To aid in the preparation of a Risk Management Evaluation (Annex F), Defra seeks data on MCCPs' current production, use, emissions, and potential socioeconomic impacts of implementing stricter regulations.
Polyhalogenated Dibenzo-p-Dioxins and Dibenzofurans (PXDD/Fs):
PXDD/Fs, which include brominated and mixed halogenated variants, are primarily formed as by-products during processes involving brominated flame retardants. Known for their persistence and toxicity, these compounds can accumulate in the environment, often resulting from e-waste burning, metallurgical industries, and other thermal processes. The POPRC is considering adding PXDD/Fs to the convention's list due to their long-range transport potential and adverse ecological and health effects.
Details of Requested Information
Defra is requesting comprehensive details, in line with Annex E and Annex F of the Stockholm Convention, including but not limited to:
- Production and Use Data: Quantitative data on production volumes and geographical locations, along with a description of uses across industries, will help establish the prevalence and distribution of MCCPs and PXDD/Fs globally.
- Risk Management and Alternatives: Parties are asked to suggest possible control measures, assess their technical feasibility, and provide insights into any existing alternatives. Information on cost and availability, along with environmental and health costs, will support the POPRC in evaluating viable substitutes.
- Socioeconomic Impact: Details on the social and economic implications of imposing restrictions or bans, including impacts on public health, agriculture, biodiversity, and industries reliant on these chemicals, are essential. This input could guide potential exemptions or specific regulatory provisions for essential uses.
- Waste Management and Disposal: Addressing the challenge of legacy contamination and safe disposal methods, Defra encourages stakeholders to provide technical data on disposal feasibility, costs, and requirements for large-scale implementation.
Submission Guidelines and Deadlines
All responses should be sent to Defra by 29 November 2024, via the designated POPs submission forms. Submitted data should adhere to the guidance provided by the POPRC to ensure accuracy and relevance, covering key points such as monitoring capacity, control status, and international evaluations.
