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. 28 41 30 28 41 30 00 Commodity Code Description 28 41 30 00 00 - Sodium dichromate 28 41 50 00 00 - Other chromates and dichromates; peroxochromates 28 41 61 00 00 -- Potassium permanganate 28 41 69 00 00 -- Other 28 41 70 00 00 - Molybdates 28 41 80 00 00 - Tungstates (wolframates) 28 41 90 00 00 - Other