Purity: 99.0% [o] < 0.6% Aps: 50 nm Ssa: 70 m2/g True density: 2.7 g/cm3 Bulk density: 0.08 g/cm3 Color: black Shelf time: 24 months Cas no.: 12070-14-3 Einecs number: 235-125-1 Form: powder Solubility in / miscibility with water: not determined Hazard class: un3178 . Properties and features: It has high purity, small particle diameters, large specific surface area, high surface activity and low loose loading density, anti high temperature, anti-oxidation, high strength, high hardness, good thermal conductivity, toughness. It is an important high temperature structure material with high melting point, high strength and anti-corrosion. It can absorb more than 99.5% the lower 2 um visible light, reflect the more 2 um visible light and store up energy efficiently. It can be used in specialty fibers, fabrics and textiles. Packing: inner/plastic bag, outer/plastic drum Storage: no special requirements. Keep container tightly sealed. Store in cool, dry conditions in well sealed containers, not be in big compression, not exposed in air during using.