CAS 1308-38-9 appears in our catalog under these names: Chromium(III) oxide, Puratronic½, 99.97% (metals basis) , Chromium(III) oxide, 99.6% (metals basis) , Chromium(III) oxide, 99% , Chromium(III) oxide, 98+% . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 5g, 25g, 100g, 500g, 2kg.