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 06 Hydrogen chloride (hydrochloric acid); chlorosulphuric acid 28 06 20 Chlorosulphuric acid 28 06 20 00 Chlorosulphuric acid Commodity Code Description 28 06 20 00 000 Chlorosulphuric acid