CAS 10294-54-9 appears in our catalog under these names: Cesium sulfate, 99.95% (metals basis) , Cesium sulfate, Puratronic½, 99.997% (metals basis) , Cesium sulfate, 99.9% (metals basis) , Cesium sulfate, 99% . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g , 100g, 10g, 50g, 25g, 500g.