Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 25 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; ot Commodity Code Description 28 25 10 28 25 20 28 25 30 28 25 40 28 25 50 28 25 60 28 25 70 28 25 80 28 25 90