... for 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 ... .60.270.020.029580-120SNA3099.60.250.020.0295325 Calcined Alumina powder