Aluminum sulfate, represented by the chemical formula Al2(SO4)3, is a white crystalline solid commonly used in various industries. It is produced by the reaction of aluminum hydroxide with sulfuric acid. This compound is highly soluble in water and is often used in water purification, paper manufacturing, and as a mordant in dyeing processes. In addition to its industrial applications, aluminum sulfate plays a role in gardening. It can lower soil pH, making it more acidic, which is beneficial for growing certain plants like blue hydrangeas. Its ability to enhance soil quality makes it a popular choice among gardeners and landscapers.