Anhydrous calcium sulfate is widely used as a desiccant due to its strong ability to absorb moisture from the air and other environments. It is commonly found in drying tubes and desiccators in laboratories, where it helps maintain dry conditions for sensitive chemical reactions and storage of hygroscopic materials. Its high thermal stability allows it to be regenerated by heating, making it reusable and cost-effective. In the construction industry, it serves as a key component in drywall and plasterboard, providing fire resistance and structural integrity. It is also used as a filler in cement to control the setting time and improve workability. In food processing, anhydrous calcium sulfate acts as a firming agent, nutrient supplement (source of calcium and sulfur), and coagulant in products like tofu. It is approved for use in various food applications due to its safety and inert nature. Additionally, it finds use in agriculture as a soil conditioner to improve soil structure and supply essential nutrients, particularly in calcium-deficient or compacted soils.