Strontium Carbonate Molecular Formula: SrCO3 Molecular Weight: 147.62 Specification: Chemical composition Requirement Assay (SrCO3) 97% Min Barium (BaCO3) 1.7% Max Calcium (CaCO3) 0.5% Max Moisture 0.3% Max Iron (Fe2O3) 0.01% Max Sulfate (SO42-) 0.45% Max Moisture (H2O) 0.5% Max Sodium 0.15% Max Insoluble matter in HCl 0.3% Max Packing: Net each in 25kg plastic woven bag, lined with PE bag.