Specification: Testing Item First Grade III Content (%) 98.5 Min Iron (%) 0.005 Max Chloride (Cl) (%) 0.02 Max Sulfate (SO4) (%) 0.01 Max Phosphate (PO4) (%) 0.6 Max Appearance White Crystal. 25kg ,50kgs, 500kgs, 1000kgs plastic bag lined with PE or by customers requirement.