Silica fume Analysisresult 900 (%)920 (%)940 (%)970 (%) Sio289.0292.0994.896.77 K2o1.321.120.630.26 Na2o0.520.420.350.29 Ph value8.187.786.607.10 Loi 750f¦1.801.600.900.80 Moisture content (when bagged) 0.41 0.400.430.41 Coarse particles:·+45 micron 64.732.6 Specific surface area (b.E.T.)1 8 m2/g19 m2/g19 m2/g19 m2/g Bulk density(kg/m3) 200~350 (900u)200~350 (920u)200~350 (940u) 500~600 (900d)500~600 (920d)200~350 (940u) 800kg/jumbo bag, 20'fcl contains 16 tons.