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 16 HYDROXIDE AND PEROXIDE OF MAGNESIUM; OXIDES HYDROXIDES AND PEROXIDES, Commodity Code Description 28 16 10 HYDROXIDE AND PEROXIDE OF MAGNESIUM 28 16 40 OXIDES, HYDROXIDES AND PEROXIDES, OF STRONTIUM OR BARIUM