EPA Foregoes Opportunity to Improve Nanotechnology Oversight

The U.S. Environmental Protection Agency released its current thinking on whether a nanoscale material is a “new” or “existing” chemical substance under the Toxic Substances Control Act (TSCA). In the document, TSCA Inventory Status of Nanoscale Substances—General Approach, EPA states that it will maintain its practice of determining whether nanoscale substances qualify as new chemicals under TSCA on a case-by-case basis.

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