... alumina is high strength, low abrasion, no soften in water, no expansion, no powdery, no crack. It ... paraffin in the water gas, especially in the drinking water defluorination. Physical Properties KA401 KA402KA403KA404KA405AppearanceWhite, Sphere, No Odor, Insoluble In Water, ... 400.30-0.50Static Absorption (RH=60%)%Water Absorption17-19Fluorine Absorption 0.12Water Absorption50Water Absorption50- ...