... 2O 3Aluminum Oxide, AluminaThe chemical composition of alumina, impurity content, no more than:Fe2O3 - 0,03%; SiO2 - 0,02%; Na2O- 0,4 ... ,5%Content of L.O.I. (determined at 300-1100)no more than 1,2%Bulk weight, g/cm3≈ 1,0Density, g ... ), m2/g≈ 70-90Particle Size Information-5 micronno more than 1%-45 micronno more than 20%Calcined AluminaITEMAL2O3 %Na2O%SiO2%Fe2O3%a ...