... so the specific surface is large. It can be used as absorbent desiccant and catalyst carrier. It is also ... no expansion, no powdery, no crack. It can widely used in the deep drying of cracked gas, ethylene and propylene, ... . Physical Properties KA401 KA402KA403KA404KA405AppearanceWhite, Sphere, No Odor, Insoluble In Water, InnocuousCrystal Typex-px-pyyx-pChemical CompositionAl2O3 %≥93≥93≥ ...