
EPA Flags Unreasonable Risk from D4 in Industrial and Environmental Use
EPA draft risk evaluation finds octamethylcyclotetrasiloxane (D4) poses significant risks to workers and aquatic life, signalling regulatory change for industry.


The U.S. Environmental Protection Agency (EPA) invites the public to a critical webinar happening on February 20, 2024, from 1:00 to 4:00 p.m. EST. This session will focus on the evaluation process for five chemicals under the Toxic Substances Control Act (TSCA). The aim is to engage with a broad audience, especially those affected by or involved with these chemicals, to gather insights on usage, exposure, and impacts.
In December 2023, the EPA embarked on prioritizing five chemicals for risk assessment: acetaldehyde, acrylonitrile, benzenamine, MBOCA, and vinyl chloride. These substances are linked to serious health risks, including carcinogenic effects. The webinar will delve into the uses of these chemicals in industries such as manufacturing, adhesives, plastics, and petrochemicals, and the potential health risks associated with exposure.
The EPA stresses the importance of contributions from all stakeholders, including industry representatives, government entities, and community members. Insights into how these chemicals are used, potential exposure routes, and the health impacts experienced by communities are invaluable for the EPA’s comprehensive review process.
Attendees interested in providing comments during the webinar are encouraged to contact Sarah Soliman at her EPA email address by February 16, 2024. Furthermore, the EPA welcomes public comments on the prioritization of these chemicals through March 17, 2024, via their official website and specific regulatory dockets for each chemical.
This webinar signifies a key effort by the EPA to ensure the safety and health of the public with respect to chemical exposure. Through gathering detailed information and stakeholder feedback, the EPA aims to make informed decisions on classifying these chemicals as High-Priority Substances for further evaluation under TSCA guidelines.
This initiative not only highlights the EPA's dedication to environmental safety and public health but also provides a platform for meaningful engagement with communities and industries affected by chemical exposures.
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EPA draft risk evaluation finds octamethylcyclotetrasiloxane (D4) poses significant risks to workers and aquatic life, signalling regulatory change for industry.

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