Spec.: Al(OH)3: 99.6% min. Al2O3:64.5%max SiO2: 0.05% max. Fe2O3: 0.02% max. Na2O: 0.3% max. Absorption of Oil ml/100g:33 PH: 7.5 9.8 Moisture: 0.3% max. Whiteness:96% min. Particle Size: D50: 8 11um + 100 mesh: 0% + 325 mesh: 4% max. Packing:In 50KG Bag