On July 24, 2026, the U.S. Environmental Protection Agency (EPA) published a final significant new use rule (SNUR) for multi-walled carbon nanotubes (P-22-163) that were the subject of a premanufacture notice (PMN) and are also subject to an Order issued by EPA pursuant to the Toxic Substances Control Act (TSCA). 91 Fed. Reg. 46742. The SNUR requires persons who intend to manufacture (including import) or process these multi-walled carbon nanotubes for an activity that is designated as a...
