... aluminous refractory, ceramic product, sparking plugs and grinding material. Alumina CAS No.: 1344-28-1 Molecular Weight: 101.96 Chemical Formulas: Al ... 2O 3Aluminum Oxide, AluminaThe chemical composition of alumina, impurity content, no more than:Fe2O3 - 0,03%; SiO2 - 0,02%; Na2O- 0 ... ,5%Content of L.O.I. (determined at 300-1100)no more than 1,2%Bulk weight, g/cm3≈ 1,0Density ...