We are Hangzhou Wanjing New Material Co.,Ltd based in Hangzhou, China. We are member of TradeKey.com since July, 2012. Our business is related to Chemicals industry and we specifically deal in nanopowder oxide. Please find our product details below: Sell Basic information： Chemical name：alumina;aluminum oxide CAS No：1344-28-1 molecular formula：Al2O3 molecular weight：101.9 Product characters： 1. Small particle size, less than 5 nanometer. 2. Big surface area about 300 m2/g , good pore structure. 3. Excellent dispersion property and high stability. 4. High catalytic activity, test indicates catalytic activity of this type nano-alumina has over 5 times than regular Y phase alumina nanopowder. Specification ： Item no JR04 Powder Appearance White powder Dispersion appearance Transparent liquid Particle size 3-5nm Content 99.99% Crystal phase γ Surface area, m2/g 250-350 Surface property hydrophilic Application ： 1. High active catalyst and catalyst carrier 2. Transparent coating 3. Transparent painting 4. Transparent alumina ceramics 5. Optical ceramics Precision polishing liquid such as Silicon wafer polishing, jewel wafer polishing Sell Precision polishing grade Alumina nanopowder Basic information: Cas no:1344-28-1 Crystal phase stable, high hardness, small particles size and equal distribution; Strong grinding force, quick polishing, bright; Hhigher grinding efficiency than silicon and other soft grinding materials, better polishing effect. Thank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.