... Aluminum potassium sulfate Aluminum potassium sulfate is a colorless transparent, crystals, odourless,non-toxic, a sweet taste and acerbity, have ... food additives. e. Used for textile. Specification ItemStandardAppearancecolorless cube crystals Purity 99%minPb 0.001%maxAs 0.0002%maxWater-insoluble ... , sign with no moisture and no insolation. 99% potassium alum sulfate colorless cube crystals