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 36 CARBONATES; PEROXOCARBONATES (PERCARBONATES); COMMERCIAL AMMONIUM 28 36 60 BARIUM CARBONATE Commodity Code Description 28 36 60 00 BARIUM CARBONATE