Richard Denison, Ph.D., is a Senior Scientist.
[Links to posts in this series: Part 1, Part 2, Part 3, Part 4, Part 5]
In my last post, I decried EPA’s shortsighted decision to declare nano forms of chemicals listed on the Toxic Substances Control Act (TSCA) Inventory to be “existing” rather than “new” chemicals. But I noted that EPA did not rule that all nanomaterials are existing chemicals. EPA says it will consider buckyballs, carbon nanotubes, or anything else that has no counterpart – a substance with the same chemical structure – already on the TSCA Inventory to be “new.” So can we rest assured that, at least for these nanomaterials, EPA has sufficient authority under TSCA to effectively identify and address their potential risks? Would it were so. Read More