... refractory, ceramic product, sparking plugs and grinding material. Alumina CAS No.: 1344-28-1 Molecular Weight: 101.96 Chemical Formulas: Al 2O 3Aluminum ... %Content of L.O.I. (determined at 300-1100)no more than 1,2%Bulk weight, g/cm3≈ 1,0Density, g/cm3 ... ≈ 3,2 – 3,4Specific surface area (SSA), m2/g≈ 70-90Particle Size ...