CAS 7440-25-7 appears in our catalog under these names: Tantalum Powder < 45 micron/ 99.9%, Tantalum Powder < 100 micron/ 99.9+%, Tantalum Pellets <3 mm diameter/ 99.9%, Tantalum Pellets 5-12 mm diameter/ 99.9+%, Tantalum Pellets 6 x 6 mm/ 99.9+%. Offered by: Chemat, VHG, GLPBio, Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 25m, 1piece, 50ml, 500ml, 250ml, 100ml, 100g.