... 3.Appearance:Grain Aluminium sulphate 1,alumium sulphate appearance: white powder, flake and granule 2,Purity:15.6%--17 ... alum,aluminium salt, printing ink,lubricant,boiler cleaning agent,satin white,oilcloth,linoleum,ceramics,for sizing paper,clarifying fats and oils ... ,tanning white leather,and water purification as deodorization and decolourizer in ...