Chapter 28
Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
50 headings · 408 CN codes
- 2801 I. CHEMICAL ELEMENTS 5 codes
- 2802 Sulphur, sublimed or precipitated; colloidal sulphur 1 codes
- 2803 Carbon (carbon blacks and other forms of carbon not elsewhere specified or included) 1 codes
- 2804 Hydrogen, rare gases and other non-metals 16 codes
- 2805 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury 30 codes
- 2806 II. INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS 3 codes
- 2807 Sulphuric acid; oleum 1 codes
- 2808 Nitric acid; sulphonitric acids 1 codes
- 2809 Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined 2 codes
- 2810 Oxides of boron; boric acids 2 codes
- 2811 Other inorganic acids and other inorganic oxygen compounds of non-metals 17 codes
- 2812 III. HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS 14 codes
- 2813 Sulphides of non-metals; commercial phosphorus trisulphide 3 codes
- 2814 IV. INORGANIC BASES AND OXIDES, HYDROXIDES AND PEROXIDES OF METALS 3 codes
- 2815 Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium 4 codes
- 2816 Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium 3 codes
- 2817 Zinc oxide; zinc peroxide 1 codes
- 2818 Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide 18 codes
- 2819 Chromium oxides and hydroxides 6 codes
- 2820 Manganese oxides 4 codes
- 2821 Iron oxides and hydroxides; earth colours containing 70 % or more by weight of combined iron evaluated as Fe<sub>2</sub>O<sub>3</sub> 2 codes
- 2822 Cobalt oxides and hydroxides; commercial cobalt oxides 1 codes
- 2823 Titanium oxides 6 codes
- 2824 Lead oxides; red lead and orange lead 2 codes
- 2825 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides 22 codes
- 2826 V. SALTS AND PEROXYSALTS, OF INORGANIC ACIDS AND METALS 9 codes
- 2827 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides 20 codes
- 2828 Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites 3 codes
- 2829 Chlorates and perchlorates; bromates and perbromates; iodates and periodates 5 codes
- 2830 Sulphides; polysulphides, whether or not chemically defined 3 codes
- 2831 Dithionites and sulphoxylates 2 codes
- 2832 Sulphites; thiosulphates 3 codes
- 2833 Sulphates; alums; peroxosulphates (persulphates) 16 codes
- 2834 Nitrites; nitrates 5 codes
- 2835 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined 14 codes
- 2836 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate 13 codes
- 2837 Cyanides, cyanide oxides and complex cyanides 5 codes
- 2839 Silicates; commercial alkali metal silicates 4 codes
- 2840 Borates; peroxoborates (perborates) 9 codes
- 2841 Salts of oxometallic or peroxometallic acids 24 codes
- 2842 Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides 13 codes
- 2843 VI. MISCELLANEOUS 9 codes
- 2844 Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products 28 codes
- 2845 Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined 9 codes
- 2846 Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium or of mixtures of these metals 20 codes
- 2847 Hydrogen peroxide, whether or not solidified with urea 1 codes
- 2849 Carbides, whether or not chemically defined 7 codes
- 2850 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849 11 codes
- 2852 Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams 2 codes
- 2853 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 5 codes