Premium grade(%) First grade(%) Assay(as h3po3 ) 99.0 98.0 Fe (as fe ) 0.0012 0.005 Chloride(as cl ) 0.01 0.01 Sulfate(as so4 ) 0.006 0.006 Phosphate(as po4 ) 0.1 0.1 Appearance White crystal White crystal Aq. Solution test (70%) Colorless transparent Colorless transparent without any impurities Packing: (1) 25kg in plastic woven bag; (2) 50kg in paper drum or metal pail; (3) 1000kg in big bag; (4) or upon your demand
