Aluminum sulfate is a chemical compound with the formula Al2(SO4)3. It appears as a white crystalline solid and is commonly used in various industries, including water treatment, paper manufacturing, and food processing. In water treatment, it helps to clarify water by causing impurities to clump together, making them easier to remove. In addition to its industrial applications, aluminum sulfate is also used in gardening to lower soil pH, making it more acidic. This can benefit certain plants that thrive in acidic conditions. It is important to handle aluminum sulfate with care, as it can be irritating to the skin and eyes.