Methods for identifying ammonium chloride:

1. Heating decomposition can produce two kinds of gases, one can make the purple litmus test paper blue, the other can make the purple litmus test paper red, indicating the production of an acid gas, an alkaline gas, heating decomposition is chlorinated according to.

2. Ammonium chloride is white or yellowish crystal, easy to dissolve in water, strong water absorption, easy to agglomerate. When a small amount of ammonium chloride is heated on fire, a strong irritating odor can be smelled, accompanied by white smoke, which melts rapidly and disappears completely. During the melting process, the unmelted part is yellow.