Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 06 Hydrogen chloride (hydrochloric acid); chlorosulphuric acid. 28 06 10 28 06 10 00 Commodity Code Description 28 06 10 00 00 - Hydrogen chloride (hydrochloric acid) 28 06 20 00 00 - Chlorosulphuric acid