Calcium Sulfate. Alabaster . Anhydrous Sulfate of Lime . Artificial Dental Stone . Calcium Sulfate (1:1), Dihydrate . Calcium Sulfate (1:1), Hemihydrate . Calcium Sulfate (2:1) . Calcium Sulfate Dihydrate . Calcium Sulfate, Anhydrous . Calcium Sulfate, Dihydrate . Calcium Sulfate, Hemihydrate . Calcium Sulphate . Drierite . Gypsite . Gypsum, Dental . Karstenite . Stone, Artificial Dental . Anhydrous Calcium Sulfate . Dihydrate Calcium Sulfate . Hemihydrate Calcium Sulfate . Lime Anhydrous Sulfate . Dental Stone, Artificial . Gypsum . Plaster of Paris . Dental Gypsum . A calcium salt that is used for a variety of purposes including: building materials, as a desiccant, in dentistry as an impression material, cast, or die, and in medicine for immobilizing casts and as a tablet excipient. It exists in various forms and states of hydration. Plaster of Paris is a mixture of powdered and heat-treated gypsum. . 0.69