Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED 28 Inorganic chemicals;organic or inorganic compounds of precious metals, ofrare-earth, of radioactive elements or of isotopes 28 05 ALKALI OR ALKALINE-EARTH METALS; RARE-EARTH METALS... ; MERCURY Commodity Code Description 28 05 11 Sodium 28 05 12 Calcium 28 05 19 Other 28 05 30 Rare-earth metals, scandium and yttrium, whether or not intermixed or inter-allo 28 05 40 Mercury