Specification: industrial (85%, 80%, 75%): meet GB2091-2003; customer requirements Grade:Superior grade First grade Qualified grade Color / Hazen ≤ 20 30 40 Phosphoric acid (H3PO4) mass fraction,% ≥ 85.0 85.0 85.0 Chloride (Cl) content,% ≤ 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 Sulfate (SO4) content,% ≤ 0.003 0.005 0.01 Iron (Fe) content,% ≤ 0.002 0.002 0.005 Arsenic (As) content,% ≤ 0.0001 0.005 0.01 Heavy metal (Pb) content,% ≤ 0.001 0.001 0.05 Application Industrial grade:used in the production of inorganic acid, phosphoric acid manganese and various kinds of potassium phosphate. Pharmaceutical industry:sodium, neurological glycerol, tooth material adhesive agent and penicillin Ph regulators etc. Plastic industry :the production of condensation reaction of phenolic resin catalyst. Chemical industrial :the production of detergent additives, stems, and make match impregnation use safer. The metallurgical industry : the production of phosphoric acid, can increase LianGangLu refractory mud. The food industry : Acidic odorant,food additive Paint industry :The metal antirust paint