Section 06 Products of the chemical or allied industries 28 Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or isotopes 28 25 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides. 28 25 20 Lithium oxide and hydroxide 28 25 20 00 Lithium oxide and hydroxide Commodity Code Description 28 25 20 00 000 Lithium oxide and hydroxide