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 52 COMPOUNDS, INORGANIC OR ORGANIC, OF MERCURY, EXCLUDING AMALGAMS. Commodity Code Description 28 52 10 CHEMICALLY DEFINED, INORGANIC OR ORGANIC COMPOUNDS OF MERCURY, EXCL AMALGAMS 28 52 90 OTH INORGANIC OR ORGANIC COMPOUNDS OF MERCURY, NOT CHEMICALLY DEFINED, EXCL AMALGAMS