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EPA Extends Comment Period for Proposed Registration Decision for New Nanosilver Product
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By Lynn L. Bergeson and Carla N. Hutton

As reported in our February 13, 2020 blog item, the U.S. Environmental Protection Agency (EPA) announced on February 12, 2020, that it is seeking public input on a proposal to incorporate a new nanosilver pesticide product into textiles to combat odors, discoloration, and other signs of wear.  The proposed registration decision is for NSPW Nanosilver, and the proposed pesticide product, Polyguard-NSPW Master Batch (Polyguard), will be incorporated into textiles to suppress bacteria, algae, fungus, mold, and mildew, which cause odors, discoloration, stains, and deterioration.  According to EPA, based on its human health and ecological risk assessment, it has preliminarily determined that the new active ingredient in Polyguard meets the regulatory standard under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) for use as a materials preservative in textiles.  According to a February 27, 2020, memorandum placed in Docket ID EPA-HQ-OPP-2020-0043, EPA received a request to extend the comment period 30 days to allow additional time to review the documentation contained in the docket.  The memorandum states that EPA “feels that 15 additional days should be sufficient to allow for adequate review of the Proposed Decision and supporting documentation.”  Comments are now due March 30, 2020.