... 2.12(H2O) 2.Potash alum Purity:99.2% 3.HS code:2833301000 4.CAS:7784-24-92012 hot sale Aluminium Potassium ... odorless, nontoxic, tastes slightly sweet and puckery, astringent, easily soluble in water, its water solution appears acid,is would lose crystal ... alum, duodenal ulcer, tuberculosis, hemoptysis and other diseases. (2) Food In addition, alum is the traditional food improvers and leavening agents ...