Synthesis and Physicochemical Properties of Di- and Trivalent Metal–Ammonium Phosphates

Abstract

Data on the infl uence exerted by the synthesis conditions and by the nature and relative amounts of precursor reagents on the properties of metal–ammonium phosphates, promising as components of fi re-retardant and fi re-extinguishing additives, are summarized and analyzed. The manner in which the solution pH and nature and relative amounts of the reacting metal-, nitrogen-, and phosphorus-containing compounds affect the phase composition, solubility, aggregative state, and fundamental aspects of thermal transformations of products being synthesized on the basis of di- and trivalent metal–ammonium phosphates in a wide temperature range is determined