Aluminium hydroxide Cas no. : 21645-51-2 Formula: Al (OH) 3 Mol WT.: 78 H. S. code: 2818. 30 Synonyms hydrated alumina; alumina hydrate; alumina trihydrate; ath; aluminum hydrate; aluminum trihydrate; alhydrogel; superfos; amphogel; aluminum (iii) hydroxide; amorphous alumina; trihydrated alumina; trihydroxyaluminum; Please kindly be noted that aluminium hydroxide used for aluminium sulphate, specification as follow: Al (oh) 3: 98. 5% min. Basis) Al2o3: 64. 5% min. Basis) Sio2: 0. 05% max. Fe2o3: 0. 02% max. Na2o: 0. 40% max. Moisture: 10% max. L. o. I.: 35% max. . Packing: in 50 / 1000 kgs bags. Regarding Aluminium Hydroxide for filler,spec as follow: Al(OH)3: 99.6% min. SiO2: 0.03% max. Fe2O3: 0.02% max. Na2O: 0.2% max. L.O.I.: 35% max. Moisture: 0.1% max. PH: 7.5~10 Whiteness:93% min. Particle Size:D50: 75~95um Packing: in 25 kgs bags. We have different size,fine, ultra fine, and also coated by Silane or Stearic Acid. Particle size D50: 75~90um,50um,25um,20um,14um,10um,5um,3um,1um. Best Regards Yang Haitao HENAN KINGWAY CHEMICALS CO.,LTD.