282510 Hydrazine, Hydroxylamine, Their Inorganic Salts
282520 Lithium Oxide and Hydroxide
282530 Vanadium Oxides and Hydroxides
282540 Nickel Oxides and Hydroxides
282550 Copper Oxides and Hydroxides
282560 Germanium Oxides and Zirconium Dioxide
282570 Molybdenum Oxides and Hydroxides
282580 Antimony Oxides
282590 Other Inorganic Bases, Metal Oxides, Hydroxides, Peroxides