Aluminium Sulfate (Alum Lumps) is a white to off-white crystalline solid commonly used as a coagulant in water treatment, paper manufacturing, and dyeing processes. It is produced by reacting aluminium hydroxide with sulfuric acid, resulting in a compound that readily dissolves in water. In water treatment, alum helps remove suspended solids by neutralizing their charges, allowing them to clump together and be filtered out. It is also used in leather tanning, fireproofing textiles, and pH adjustment in various industrial applications.