Silica Fume NR920 is a dry powder available in two forms,densified silica fume and undensified silica fume. . Silica Fume NR920 is a pozzolanic material that consists primarily of fine silicon dioxide particles in a non-crystalline form. Silica Fume NR920 meets the requirements of ASTM C-1240 and contains a minimum of 92% silicon dioxide (SiO2). Technical Data: Index items Standard Value SiO2(Silicon Dioxide) Min. 92.0% Fe2O3 (Iron Oxide) Max. 0.50% Al2O3(Aluminium Oxide) Max. 0.70% CaO(Calcium Oxide) Max. 0.50% MgO(Magnesium Oxide) Max. 0.50% K2O(Potassium Oxide) Max. 0.70% Na2O(Sodium Oxide) Max. 0.40% Moisture Content(H2O) Max. 1.5% Loss on Ignition(L.O.I) @ 975 degree celsius Max. 3.0% Percent Retained On 45micron (325 sieve) Max. 1.5% Bulk Density 250-300kg/m3 Silica Fume CAS#: 69012-64-2  Silica Fume Packing: 500kg/jumbo bags, and 20kg and 25kg small plastic woven bags.  Application & Usage: 1. Newreach Silica Fume 920 is used in cement. 2. Newreach Silica Fume 920 in used in concrete. 3. Newreach Silica Fume 920 in ceramics. 4. Newreach Silica Fume 920 in mortars.