Sell Aluminum potassium sulfate (potassium alum)

Name  Aluminium potassium sulfate dodecahydrate 
Synonyms  Potassium alum 
Formula  AlK.(SO4)2.*2(H2O)
CAS No.  ********9

CONTENT (DRY BASIS)                       *9.2%MIN

ARSENIC (As)                                    0.***2%Max

F                                                        0.**3%Max

Pb                                                      0.**1%Max

HEAVY METALS (as Pb)                     0.**2%Max

NH4                                                    0.1%Max                                  

INSOLUBLE IN WATER                       0.2% Max

MOISTURE                                        1.0% Max