... .008-1.0 Sulfate SO 4 2- , % ≤ 0.01-0.07 0.03-0.10 0.05-0.2 0.1-0 ... chloride Cl , % ≤ 0.005 0.01 0.02 0.05 Heavy metal (Pb) ,% ≤ 0.01-0.05 0.03-0.10 0.05-2 ... .0 0.1-0.5 Fe ) , % ≤ 0.001 0.01 0.02 0 ... . Packing, transportation and storage :zinc nitrate plastic woven bag lined with high density PE bag, Net Wt. 50kg . size is :580 × 950mm ...