CAS 12228-87-4 appears in our catalog under these names: Ammonium biborate tetrahydrate, AMMONIUM BIBORATE TETRAHYDRATE, Ammonium biborate tetrahydrate, 97%, 97%, Ammonium tetraborate tetrahydrate, ROTI®METIC 99,999 % (5N), 25 g, plastic. Offered by: GLPBio, Sigma-Aldrich, Chemat, Roth. Available pack sizes: 100g, 25g, 500G, 1kg.