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 21 Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2O3. 28 21 10 Iron oxides and hydroxides 28 21 10 00 Iron oxides and hydroxides Commodity Code Description 28 21 10 00 000 Iron oxides and hydroxides