... : Potassium alum, Potash alum, Tawas 2.PropertyAluminium Potassium Sulfate is colorless, transparent, particle or crystalline powder, odorless, nontoxic, ... of paper, Painting and dyeing of coating, drug, making of paint and leather, coagulant, processing of fiber board and rubber ... . However, due to the chemical composition of alum is potassium aluminum sulfate, containing aluminum ions, so excessive ...