Stabilization of polyphosphate fertilizer solutions

作者: Alva W Frazier

DOI:

关键词: ChemistryAmmoniumPolyphosphatePrecipitation (chemistry)Inorganic chemistryPotassiumMagnesiumAluminiumFluorideMetal

摘要: A minor excess of fluoride over that required to react with all the aluminum and magnesium in ammonium potassium polyphosphate liquid fertilizer solutions will prevent precipitation these elements. Effectively, this addition shifts solution composition from a region where water-insoluble precipitate MgAl(NH4)5(P2O7)2F2.6H2O (I) is stable water-soluble form, dimorph II, stable; thus metallic cations are sequestered. Alternatively smaller amount added resulting filtered obtain stabilized solution.