Vietnam calcium carbonate powder, lumps and chips DETAILING PRODUCTS:Chemical & Physical Analysis:CHEMICAL CONTENTSPHYSICAL ... ,9,12,13,14,15,16≥97%MgO0.08%Brightness≥95%Fe2O30.02%Whiteness grade 9,10,11>94%Al2O30.03 ... meet your demands of Quantity, Quality, Appearance, Price and Service. Calcium Carbide Powder