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David

Darling

ammonium perchlorate (NH4ClO4)

ammonium perchlorate

Ammonium perchlorate is a white crystalline solid, the salt of ammonia and perchloric acid (HClO4). It is the oxidizer used in most composite rocket motors, including those of the Space Shuttle Solid Rocket Boosters. It is typically used in conjunction with aluminum powder (the fuel) and polybutediene rubber (the binder holding the mixture together).