... FCC and USP. 1Chemical name:Dipotassium Phosphate,Patassium phosphate,dibasic2M. F.:K2HPO43M. W. :174.184Physical properties:White or colorless powder,easily soluble ... material) ≥%98.0Water-insoluble ≤%0.2Arsenic (As) ≤%0.0003Fluoride (as F) ≤%0.001Loss on Drying ≤%2.0Pb ≤%0.0002Heavy Metals (as ...