CAS 12028-48-7 appears in our catalog under these names: Ammonium metatungstate, Ammonium metatungstate hydrate, min. 90 % WO3, p.a., 25 g, plastic, Ammonium metatungstate hydrate, min. 90 % WO3, p.a., 100 g, plastic, Ammonium metatungstate hydrate, min. 90 % WO3, p.a., 500 g, plastic. Offered by: GLPBio, Roth. Available pack sizes: 100g, 25g, 500g.