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 52 Inorganic or organic compounds of mercury, whether or not chemically d efined, excluding amalgams. 28 52 10 Mercury sulphates Commodity Code Description 28 52 10 10 Mercury sulphates 28 52 10 20 Mercury compounds of a kind used as luminophores 28 52 10 90 Other