... Prompt delivery 4,Free sample for inspection Specification of the Manganese Carbonate,Manganous Carbonate1,Molecular formula : MnCO32,Molecular weight : ... vitriol, and then remove the impurities to get manganese sulfate solution, which react with ammonium bicarbonate to ... ,25kg in plastic woven bag lined with double-layer high pressure polyethylene bag.2,Normal chemical, stored in cool ...