SpecificationIndex N, content More than 21.0% H2so4 Less than 0.03% Fe Less than 0.007% As Less than 0.0005% Pb Less than 0.005% Water insolubleLess than 0.01% H2o Less than 0.2% Appearance white granular. Packing 50kg/bag, pp bag Marks by buyers, Woven bags with inner plastic bags Pallet available 18-27mt per 20'dv