Chemicals for water treating and others.
Chemical name :Commercial sulphate of alumina . Alum (commercial Al2+ (SO4)3 17H2O is required as coagulant for water Treatment
 

Technical Specifications:

Aluminium oxide as Al2O3wt.% ::: 14.5-17.5
iron oxide as EF2O3wt.%           :::  0.8 max
insoluble matter wt.%                 :::  0.5 max.
Arsenic as P.P .M                       :::  10 Max.

Note: This article uses material from the http://rxmarine.com/