Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 41 Salts of oxometallic or peroxometallic acids. Commodity Code Description 28 41 30 28 41 50 28 41 61 28 41 69 28 41 70 28 41 80 28 41 90