| 2710.91 | 000 | Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls (PCTs) or polybrominated biphenyls (PBBs) |
| 27.11 | | Petroleum gases and other gaseous hydrocarbons |
| 2711.11 | 000 | Natural gas |
| 2711.13 | 010 | - Intended for use in manufacturing ammonia, ethylenic hydrocarbons or maleic anhydride |
| 2711.19 | 010 | 1 Petroleum gases |
| 2711.19 | | In gaseous state |
| 2711.21 | 000 | Natural gas |
| 27.12 | | Petroleum jelly; paraffin wax, micro-crystalline petroleum wax, slack wax, ozokerite, lignite wax, peat wax, other mineral waxes, and similar products obtained by synthesis or by other processes, whether or not coloured |
| 2712.20 | 000 | Paraffin wax containing by weight less than 0.75% of oil |
| 2713.90 | 100 | 1 Extracts of a pour point not exceeding 35?, derived from the treatment of lubricating oils with solvents |
| 28.04 | | Hydrogen, rare gases and other non-metals |
| 2804.10 | 000 | Hydrogen |
| 2804.10 | | Rare gases |
| 2804.21 | 000 | Argon |
| 2804.30 | 000 | Nitrogen |
| 2804.40 | 000 | Oxygen |
| 2804.61 | | Containing by weight not less than 99.99 % of silicon |
| 2804.61 | 100 | 1 Of single crystal |
| 2805.40 | | II.- INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS |
| 28.06 | | Hydrogen chloride (hydrochloric acid); chlorosulphuric acid |
| 2806.10 | 000 | Hydrogen chloride (hydrochloric acid) |
| 28.11 | | Other inorganic acids and other inorganic oxygen compounds of non-metals |
| 28.11 | | Other inorganic acids |