Assay : 98.55 % Calcium Sulphate Anhydrous is a white fine , odorless powder with diverse applications in different industries. It is commonly used as a desiccant, drying agent, and coagulant in industrial processes. Additionally, it finds applications as a filler in the manufacturing of plastics, rubber, and construction materials, as well as a component in industrial formulations such as adhesives and paints. As E516, It is often added to foods to give a firmer texture and sometimes as a source of calcium. The production of soy proteins such as tofu involves calcium sulfate, which is used as a coagulant to encourage the clumping together of small protein particles into larger pieces.