When you mix the contents of this kit you have become an explosive manufacturer under BATFE regulations subject to the regulatory requirements found in 27 CFR, Part 555. See the BATFE web site https://www.atf.gov/explosives/binary-explosives for more information.
Don't forget State and Local
All persons making explosive materials are cautioned that there may be State or local requirements in addition to the Federal explosives regulations. These requirements may apply whether a person is engaging in the business of making explosives under an ATF license or for personal non-business use. Transporting explosive materials on public roads may subject the person transporting the explosive devices to regulations under the U.S. Department of Transportation (DOT). All persons transporting explosive materials should consult with DOT prior to transporting explosives to ensure compliance with all applicable DOT requirements.