The research performed were meant at establishing the optimum conditio
ns in the zinc-ammmonium phosphate production process by processing th
e zinc chloride solutions with diammonia phosphate and ammonia. The ch
emical and phase composition studies, i.e. the thermogravimetrical and
thermodifferential ones show that the products thus obtained correspo
nd to the ZnNH4PO4 zinc-ammonium phosphate.