CAS 12070-06-3 appears in our catalog under these names: Tantalum Carbide, Tantalum carbide/ 99+%, Tantalum carbide, 99.5% (metals basis) , TANTALUM(IV) CARBIDE, <=5MICRON, 99%. Offered by: Chemat Brand, Chemat, Thermo Scientific (Alfa Aesar), Sigma-Aldrich. Available pack sizes: on request, 25g, 100g, 10g, 50g, 250g.