EPA Issues Final Significant New Use Rules for Multi-Walled Carbon Nanotubes, Citing Carcinogenicity Concerns
The U.S. Environmental Protection Agency (EPA) has published final Significant New Use Rules (SNUR) for certain chemical substances, including multi-walled carbon nanotubes (PMN P-23-105). These rules, effective January 4, 2027, mandate that any person intending to manufacture or process these nanotubes for a designated significant new use must notify the EPA at least 90 days prior to commencing the activity. The EPA's action is based on an Order issued under the Toxic Substances Control Act (TSCA). The SNUR specifies requirements for workplace protection, hazard communication, and industrial, commercial, and consumer activities. Notably, the hazard communication requirements indicate that this substance may cause eye irritation, skin sensitization, respiratory sensitization, specific target organ toxicity, reproductive toxicity, genetic toxicity, and carcinogenicity. For industrial, commercial, and consumer activities, it is a significant new use to manufacture, process, or use the substance in solid form...