High purity alumina AHP30 Typical Properties Na (ppm) 10 Fe (ppm) 3 Si (ppm) 8 Ca (ppm) 1 Mg (ppm) 1 Al2O3 (%) 99.99 Particle Size (μm) 30 α-Crystal Size (μm) 1.0~1.5 BET (m2/g) 2 Bulk Density ( Loose ) (g/cm3) 0.7