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 45 Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such 28 45 40 Helium-3 28 45 40 00 Helium-3 Commodity Code Description 28 45 40 00 00 Helium-3