CAS 1304-82-1 appears in our catalog under these names: Bismuth(III) telluride, 99.98% (metals basis) , Bismuth(III) telluride, Vacuum Deposition Grade, 99.999% (me. Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 5g, 25g, 100g, 10g, 50g.