CAS 7440-41-7 appears in our catalog under these names: Beryllium foil, 0.1mm (0.004in) thick, 99% (metals basis) , Beryllium wire, 0.25mm (0.01in) dia, annealed, 99.7% (metals, Beryllium foil, 0.05mm (0.002in) thick, 99.5% (metals basis), Beryllium foil, 0.25mm (0.01in) thick, 99.8% (metals basis) , Beryllium lump, irregular, 3-38mm (0.1-1.5in), 99.5% (metals. Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25x25mm, 50x50mm, 25cm, 50cm, 10g, 50g.