AMMONIUM CHLORIDE (China) (Treated) Specifications Appearance: white crystal Assay (% min): 99.5 Moisture (% max): 0.5 Sulfate(SO4): 0.025 Iron: 0.0005% max Heavy metals (Pb): 0.0005% max Residue after ignition: 0.4% max pH 4.0 - 5.5 Packaging: 25 kg woven bag Packing: 16-18 mt per container