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 45 ISOTOPES OTHER THAN THOSE OF HEADING 28.44; COMPOUNDS, INORGANIC OR Commodity Code Description 28 45 10 HEAVY WATER (DEUTERIUM OXIDE) 28 45 90 OTHER ISOTOPES OTHER THAN OF HD.28.44; COMPOUNDS,INORGANIC/ORGANIC, ETC..