Ultrafine nickel powder,Superfine nickel powder,Submicron nickel powder Molecular formula:Ni Average particle size:0.4 micron Size distribution:0.08-0.8 micron Purity:99.5+% Appearance:Black or grey black powder Shape:Spherical Specific surface area:0.5-10m2/g Apparent density:0.3-1.2 g/cm3 Packing:Aluminum foil bag Minimum Order: 1 KG