Ammonium nitrate (NH4NO3) is a white crystalline solid which is highly soluble in water.
Ammonium nitrate reacts with metal hydroxides, releasing ammonia and forming alkali metal nitrate, NH4NO3+NaOHNH3+H2O+NaNO3 , the ammonia released reacts with HCl to gives white dense fumes of Ammonium chloride (NH4Cl).
Ammonium nitrate leaves no residue on heating NH4NO3N2O+2H2O