Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 37 Cyanides, cyanide oxides and complex cyanides. 28 37 11 28 37 11 00 Commodity Code Description 28 37 11 00 00 -- Of sodium 28 37 19 00 00 -- Other 28 37 20 00 00 - Complex cyanides