... :99.99% 3,white powder 4,nano High-purity Ultrafine gamma Alumina PowderChemical Name:γ- Al2O3Molecular Weight:101.9CAS#1344-28-1Qualification ... .99Primary Diameter,nm, ≤2020152020D10,μm, ≤2.500.200.202.500.30D50,μm, ≤6.002.502.006.001.00D90,μm, ≤17.005.004.5017 ... <1253<11UPC818M,UPC818P520<13123<11 High-purity Ultrafine alpha Alumina(gamma)