SEARCH Articles Figures Tables Hydrofluoric acid/ammonium orthophosphate Magnesium ammonium orthophosphate Orthophosphates Sodium ammonium orthophosphates Sodium ammonium orthophosphates hydroxide Sodium ammonium orthophosphates physical Sodium ammonium orthophosphates preparation Sodium ammonium orthophosphates properties, chemical Sodium ammonium orthophosphates purification Sodium ammonium orthophosphates pyrophosphate