... 90Mn% ≥ 43SO4 % ≤ 0.5Chloride(Cl) % ≤ 0.12Fe % ≤ 0.002Insoluble matter in nitric acid% ≤ 0.1Heavy metals % ≤ 0.0019As % ≤ 0.00009Brief introduction ... , pigment, drier, the material of manganous salts3,Used in medicine, mechanical parts and phosphating process4,It also can ... with double-layer high pressure polyethylene bag.2,Normal chemical, stored in cool, dry and airiness place, avoid moisture, heat ...