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 cost-effective and reusable. In the construction industry, it serves as a key component in drywall and plaster products, providing structural integrity and fire resistance. It is also used as a cement retarder to control the setting time of cement mixtures. In food processing, anhydrous calcium sulfate is employed as a firming agent, dough conditioner, and source of calcium in fortified foods. It is approved for use in various food products, including baked goods and tofu, where it acts as a coagulant. Additionally, it finds application in agriculture as a soil amendment to improve soil structure and supply sulfur and calcium to crops without altering soil pH significantly.