CAS 7778-18-9 appears in our catalog under these names: Calcium sulfate, anhydrous, Puratronic½, 99.993% (metals ba , Calcium sulfate, anhydrous, 99% , Drierite|r, regular (CaSO{4}), Lab Grade , Drierite|r, indicating (CaSO{4}) , Drierite«, regular (CaSOä4ü), Lab Grade . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 2g, 10g, 50g, 250g, 1kg, 5kg, 2270g, 454g.