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 39 SILICATES; COMMERCIAL ALKALI METAL SILICATES. Commodity Code Description 28 39 11 SODIUM METASILICATES 28 39 19 OTHER SILICATES OF SODIUM 28 39 90 OTHER SILICATES; COMMERCIAL ALKALI METAL SILICATES