CAS 409-21-2 appears in our catalog under these names: Silicon carbide powder, medium, 120 grit , Silicon carbide whiskers, 99% (metals basis) , Silicon carbide, 400 grinding compound, 2oz (57g) , Silicon carbide, ^a-phase, 99.8% (metals basis) , Silicon carbide powder, superfine, 600 grit . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 10000g, 2500g, 500g, 10g, 50g, 250g, pkg, 100g.