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 defined, excluding amalgams 28 52 90 - Other 28 52 90 00 - Other Commodity Code Description 28 52 90 00 000 - Other