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 44 MIXTURES AND RESIDUES CONTAINING THESE PRODUCTS. 28 44 20 URANIUM ENRICHED IN U 235 AND ITS COMPOUNDS; PLUTONIUM & ITS COMPOUNDS; Commodity Code Description 28 44 20 00 URANIUM ENRICHED IN U 235 AND ITS COMPOUNDS; PLUTONIUM & ITS COMPOUNDS;