Characteristics Color:white. Shape: lump. Average pore diameter:8.0-10.0 nm. Specific surface area:300-400 m2/g. Pore volume:0.8-1.0 ml/g. specific heat:0.92 KJ/kg. oC Thermal conductivity:0.167 KJ/m.hr. oC. Specifications: 0.5-2mm, 1-4mm,1-8mm,2-5mm,,2-8mm,4-8mm, Packing: 20kg/bag,25kg/bag(polywoven bag) 500kg/bag(packed in plastic woven flexible container,lined with plastic film bags,shipped in container, 3.6L/5L/7L/bag or 1.8KG/2.2KG3.5kg/bag or 2.5kg/PVC jug etc.