The US Environmental Protection Agency (EPA) has published a list of the substances it had received pre-manufacture notices (PMN) for in the period April 2014 to June 2014. Five of these were for nanomaterials.
All of the nanomaterials were single-walled carbon nanotubes (SWCNTs). One of these was for use in the manufacture of silicon chips by a company; the other four were submitted by one company looking to use them in ‘materials for mechanical and electrical purposes’.
Under section 5 of the US Toxic Substances Control Act (TSCA), ‘anyone who plans to manufacture or import a new chemical substance for a non-exempt commercial purpose is required…to provide EPA with notice before initiating the activity’. PMNs are one of these types of notice, and ‘must be submitted at least 90 days prior to the manufacture or import of the chemical’.
Comments are being accepted by EPA for materials identified by their specific PMN numbers. The deadline for such comments is 16 October 2014.