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 22 Cobalt oxides and hydroxides; commercial cobalt oxides 28 22 00 Cobalt oxides and hydroxides; commercial cobalt oxides. 28 22 00 00 Cobalt oxides and hydroxides; commercial cobalt oxides. Commodity Code Description 28 22 00 00 000 Cobalt oxides and hydroxides; commercial cobalt oxides.