Determination of sulfate in granular phosphate fertilizers with thermometric titration
AB-307
fr
Sulfate can be rapidly and easily titrated thermometrically using a standard solution of Ba2+ as titrant. In industry, the widespread procedure is applied to the determination of sulfate in wet-process phosphoric acid. This bulletin deals with the determination of sulfate in granular fertilizers such as MAP (monoammonium phosphate), DAP (diammonium phosphate) and TSP (triple superphosphate). Results are reported as percentage of elemental sulfur, %S.
Sulfate can be rapidly and easily titrated thermometrically using a standard solution of Ba2+ as titrant. In industry, this procedure is applied to the determination of sulfate in wet-process phosphoric acid (see Application Bulletin AB-308). This Application Bulletin deals with the determination of sulfate in granular fertilizers such as MAP (monoammonium phosphate), DAP (diammonium phosphate), and TSP (triple superphosphate). Results are reported as percentage of elemental sulfur, %S.