Calcium sulfate dihydrate硫酸钙 二水合物二水硫酸钙, ACS二水硫酸钙Calcium sulfate dihydrate, ACSsulfuric acid, calcium salt (1:1), dihydratecalcium(II) sulfate, dihydrate (1:1:2)sulfuric acid, calcium(2+) salt, dihydrateCaSO4.2H2Ocalcium sulfate dihydratecalcium sulfate dihydrate