Ammonium perchlorate (AP) is a colorless, odorless, inorganic, crystalline compound with the molecular formula ClH4NO4 and CAS number 7790-98-9. It imparts a bitter and salty taste to water and does not readily burn, but will burn if contaminated by combustible materials. When powdered into particles smaller than 15 microns in diameter or if powdered into larger particles but thoroughly dried, ammonium perchlorate is classified as a division 1.1 explosive.
Ammonium perchlorate is considered acutely toxic and can be harmful if swallowed, cause serious eye irritation, skin irritation, and may cause respiratory tract irritation if its dust is inhaled.
Perchloric acid – ammonium salt, perchlorate.