Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 INORGANIC CHEMICALS; ORGANIC OR INORGANIC COMPOUNDS OF PRECIOUS METAL, OFRARE-EARTH METALS, OF RADIOACTIVE ELEMENTS OR OF ISOTOPES 28 40 BORATES; PEROXOBORATES (PERBORATES). Commodity Code Description 28 40 11 ANHYDROUS DISODIUM TETRABORATE (REFINED BORAX) 28 40 19 OTHER DISODIUM TETRABORATE (REFINED BORAX) 28 40 20 OTHER BORATES 28 40 30 PEROXOBORATES (PERBORATES)