Uses of Alum

• Liquid purification by suspending the Alum in turbid liquids to cause flocculation of impurities.
• In bleaching and dyeing industries, Alum is used to help artificial colors attach bond to the material, hence allowing the finished product to have brighter colors and are more resistant to discoloration or fading.
• Odor elimination
• Maintain crispiness of foods, such as pickled vegetables
• Food preservation
• When making sticky rice, suspending the alum in the water can improve rice grain texture, coloration, and arrangement.