Section 06 Products of the chemical or allied 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