application: 

Aluminium sulfate a widely used industrial reagent. It is usually used as flocculent and curing agent. It is also used in paper making and cloth dyeing. In agricultural field, it is used as pesticide or used to regulate the soil PH.

Including anhydrous and hydrous(18 crystal water) type. Usually, the crystal separated out from aqueous solution at the normal temperature is Al2(SO)3 .18H2O; when weathering, the average molecular structure is Al2(SO4)3 .14H2O, may appear white powdery, with bright flake or crystalline flakelet, odorless, to change the taste from sweetness to slight astringency.