1. Chemical Name: CALCIUM SULFATE ANHYDROUS/CALCIUM SULFATE DIHYDRATE2. Molecular Formula for Calcium Sulfate: caso4 2h2o gypsum, caso4 dihydrate3. Molecular Weight: 136.14/172.174. CAS Number: Anhydrous: 7778-18-9/10101-41-45. Packaging: Enclosed in polyethylene plastic bags with an outer layer of ...