What does it look like?
What is it?
Though, when solid, this material is just a while powder – it is powerful enough to fuel rockets. Ammonia perchlorate forms the bases of a whole class of solid rocket fuels, known as ammonia perchlorate composite propellant (APCP). It can be molded and tightly packed into boosters and when ignited is a very powerful oxidiser, which is why it is so successful in this application. As a crystal structure it’s actually a salt, as it is made up of tetragonal ClO4– anions balancing with NH4+ cations.
Where did the structure come from?
The structure of ammonium perchlorate was determined by Peyronel and Pignedoli in 1975.