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 14 AMMONIA, ANHYDROUS OR IN AQUEOUS SOLUTION. 28 14 20 AMMONIA IN AQUEOUS SOLUTION Commodity Code Description 28 14 20 00 AMMONIA IN AQUEOUS SOLUTION