Appearance, light yellow or brown
Aluminum Oxide(AL2O3)27-32%min
Basicity(B)40-90%
Water insoluble substance 1.5%max
PH value(1% aqueous solution)3.5-5.0

Purification of water, Reclaiming coal from coal-washing waste water and kaolin in ceramic industry.
Tannage and cloth cockling-prevvent, Catalyzer carrier. And Cement Solidifying,and moulding;Refining pharmaceuticals,glycerine and sugar; Paper-making glue.