Industrial Grade
    Potassium Dihydrogen Phosphate (KH₂PO₄ on dry basis) content, % ≥ 98.0; 97.0; 96.0; 92.0;
    Moisture content, % ≤ 2.5; 3.0; 4.0; 5.0;
    pH value 4.3-4.7 4.3-4.7
    Water insoluble matter content, % ≤ 0.20; 0.50 -
    Chloride (Cl) content, % ≤ 0.20 -
    Iron (Fe) content % ≤ 0.003
    Arsenic (As) content, % ≤ 0.005
    Heavy metals (as Pb) content, % ≤ 0.005
    Potassium oxide (K2O on dry basis) content, % ≥ 33.9; 33.5; 33.2; 31.8;
    Food Grade
    Potassium Dihydrogen Phosphate (KH₂PO₄ on dry basis) content, % ≥ 98.0
    Loss on drying content % ≤ 1.0
    Water insoluble matter content, % ≤ 0.2
    Arsenic (As) content, % ≤ 0.0003
    Heavy metals (as Pb) content, % ≤ 0.002
    Fluoride (as F) content, % ≤ 0.001
    Lead (as Pb) content, % ≤ 0.0005