Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 34 Nitrites; nitrates. 28 34 10 28 34 10 00 Commodity Code Description 28 34 10 00 00 - Nitrites 28 34 21 00 00 -- Of potassium 28 34 29 00 00 -- Other