FYI. Aluminum powder is an explosive precursor chemical that was used in the 1993 World Trade Center bombing.
The Cybersecurity and Infrastructure Security Agency’s (CISA) Chemical Facility Anti-Terrorism Standards (CFATS) program identifies and regulates high-risk facilities in possession of chemicals of interest (COI).
Aluminum powder is one of the many chemicals regulated under the CFATS program.
For more information, please see the CISA links below.