| 2846.90 | 220 | - Lanthanum oxide |
| 2847.00 | 000 | Hydrogen peroxide, whether or not solidified with urea |
| 2849.10 | 000 | Of calcium |
| 2849.90 | 010 | - Boron carbide, niobium carbide and tantalum carbide |
| 2850.00 | 000 | Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49 |
| 28.52 | | Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams |
| 2852.10 | | 2 Inorganic compounds and articles thereof: |
| 2852.10 | 210 | (1) Sulphates |
| 2852.10 | 220 | (2) Chemical preparations for photographic uses (other than varnishes, glues, adhesives and similar preparations) ; unmixed products for photographic uses, put up in measured portions or put up for retail sale in a form ready for use |
| 2852.10 | 291 | - Mercury carbides |
| 2852.10 | | 3 Organic compounds and articles thereof: |
| 2852.10 | 920 | (2) Albuminoidal substances and their derivatives, excluding albuminates and other albumin derivatives |
| 2852.90 | | 1 Inorganic compounds and articles thereof: |
| 2852.90 | 110 | (1) Polysulphides |
| 2852.90 | | 2 Organic compounds and articles thereof: |
| 2852.90 | 210 | (1) Sultones and sultams |
| 28.53 | | Phosphides, whether or not chemically defined, excluding ferrophosphorus; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals |
| 2853.90 | | I.- HYDROCARBONS AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES |
| 2901.10 | 000 | Saturated |
| 2901.10 | | Unsaturated : |
| 2901.23 | 000 | Butene (butylene) and isomers thereof |
| 2901.24 | | Buta-1,3-diene and isoprene |
| 2901.24 | 010 | 1 Buta-1,3-diene |