Environmentalists are urging EPA to reconsider the safety of an already-registered copper-based wood treatment pesticide because it contains nanoscale ingredients, a case that if brought could begin to implement, and possibly expand, a long-stalled agency policy subjecting existing pesticides that contain nanoscale material to regulation as "new" products. The International Center for Technology Assessment (ICTA), which advocates for restrictions on the use of nanomaterials which could pose risks to human health or the environment, is asking the agency to investigate whether it should cancel registrations for three pesticides containing what the groups says are nanoscale copper ingredients but which the registrant failed to disclose during the registration process. Relevant documents are available on InsideEPA.com. Seepage 2 for details.
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