Chapter 28 — Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes

2801 Fluorine, chlorine, bromine and iodine 3

280110 Chlorine 280120 Iodine 280130 Fluorine; bromine

2802 Sulphur; sublimed or precipitated, colloidal sulphur 1

280200 Sulphur; sublimed or precipitated, colloidal sulphur

2803 Carbon; carbon blacks and other forms of carbon n.e.c. 1

280300 Carbon; carbon blacks and other forms of carbon n.e.c.

2804 Hydrogen, rare gases and other non-metals 11

280410 Hydrogen 280421 Gases, rare; argon 280429 Gases, rare; other than argon 280430 Nitrogen 280440 Oxygen 280450 Boron; tellurium 280461 Silicon; containing by weight not less than 99.99% of silicon 280469 Silicon; containing by weight less than 99.99% of silicon 280470 Phosphorus 280480 Arsenic 280490 Selenium

2805 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury 5

280511 Alkali or alkali-earth metals; sodium 280512 Alkali or alkali-earth metals; calcium 280519 Alkali or alkali-earth metals; other than sodium and calcium 280530 Earth-metals, rare; scandium and yttrium, whether or not intermixed or interalloyed 280540 Mercury

2806 Hydrogen chloride (hydrochloric acid); chlorosulphuric acid 2

280610 Hydrogen chloride (hydrochloric acid) 280620 Chlorosulphuric acid

2807 Sulphuric acid; oleum 1

280700 Sulphuric acid; oleum

2808 Nitric acid; sulphonitric acids 1

280800 Nitric acid; sulphonitric acids

2809 Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined 2

280910 Diphosphorus pentoxide 280920 Phosphoric acid and polyphosphoric acids

2810 Oxides of boron; boric acids 1

281000 Oxides of boron; boric acids

2811 Inorganic acids and other inorganic oxygen compounds of non-metals; n.e.c. in heading no. 2806 to 2810 6

281111 Hydrogen fluoride (hydrofluoric acid) 281112 Hydrogen cyanide (hydrocyanic acid) 281119 Inorganic acids; other than hydrogen fluoride 281121 Carbon dioxide 281122 Silicon dioxide 281129 Inorganic oxygen compounds; of non-metals, n.e.c. in item no. 2811.2

2812 Halides and halide oxides of non-metals 9

281211 Carbonyl dichloride (phosgene) 281212 Phosphorus oxychloride 281213 Phosphorus trichloride 281214 Phosphorus pentachloride 281215 Sulphur monochloride 281216 Sulphur dichloride 281217 Thionyl chloride 281219 Arsenic trichloride and other chlorides and chloride oxides, n.e.c. in item no. 2812 281290 Halides and halide oxides of non-metals; excluding chloride

2813 Sulphides of non-metals; commercial phosphorus trisulphide 2

281310 Carbon disulphide 281390 Sulphides of non-metals, (excluding carbon); commercial phosphorus trisulphide

2814 Ammonia; anhydrous or in aqueous solution 2

281410 Ammonia; anhydrous 281420 Ammonia; in aqueous solution

2815 Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium 4

281511 Sodium hydroxide (caustic soda); solid 281512 Sodium hydroxide (caustic soda); in aqueous solution (soda lye or liquid soda) 281520 Potassium hydroxide (caustic potash) 281530 Peroxides of sodium or potassium

2816 Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides of strontium or barium 2

281610 Hydroxide and peroxide of magnesium 281640 Oxides, hydroxides and peroxides, of strontium or barium

2817 Zinc; oxide and peroxide 1

281700 Zinc; oxide and peroxide

2818 Aluminium oxide (including artificial corundum); aluminium hydroxide 3

281810 Aluminium oxide; artificial corundum 281820 Aluminium oxide; other than artificial corundum 281830 Aluminium hydroxide

2819 Chromium oxides and hydroxides 2

281910 Chromium trioxide 281990 Chromium oxides and hydroxides; excluding chromium trioxide

2820 Manganese oxides 2

282010 Manganese dioxide 282090 Manganese oxides; excluding manganese dioxide

2821 Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2o3 2

282110 Iron oxides and hydroxides 282120 Earth colours; containing 70% or more by weight of combined iron evaluated as Fe2o3

2822 Cobalt oxides and hydroxides; commercial cobalt oxides 1

282200 Cobalt oxides and hydroxides; commercial cobalt oxides

2823 Titanium oxides 1

282300 Titanium oxides

2824 Lead oxides; red lead and orange lead 2

282410 Lead; lead monoxide (litharge, massicot) 282490 Lead oxides; n.e.c. in heading no. 2824

2825 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides 9

282510 Hydrazine and hydroxylamine and their inorganic salts 282520 Lithium oxide and hydroxide 282530 Vanadium oxides and hydroxides 282540 Nickel oxides and hydroxides 282550 Copper oxides and hydroxides 282560 Germanium oxides and zirconium dioxide 282570 Molybdenum oxides and hydroxides 282580 Antimony oxides 282590 Inorganic bases, metal oxides, hydroxides and peroxides; n.e.c. in heading no. 2825

2826 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts 4

282612 Fluorides; of aluminium 282619 Fluorides; other than of aluminium 282630 Sodium hexafluoroaluminate (synthetic cryolite) 282690 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts, n.e.c. in heading no. 2826

2827 Chlorides; chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides 11

282710 Chlorides; of ammonium 282720 Chlorides; of calcium 282731 Chlorides; of magnesium 282732 Chlorides; of aluminium 282735 Chlorides; of nickel 282739 Chlorides; other than of ammonium, calcium, magnesium, aluminium and nickel 282741 Chloride oxides and chloride hydroxides; of copper 282749 Chloride oxides and chloride hydroxides; other than of copper 282751 Bromides; of sodium or of potassium 282759 Bromides and bromide oxides; other than item no. 2827.51 282760 Iodides and iodide oxides

2828 Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites 2

282810 Hypochlorites; commercial calcium hypochlorite and other calcium hypochlorites 282890 Hypochlorites; n.e.c. in heading no. 2828

2829 Chlorates and perchlorates; bromates and perbromates; iodates and periodates 3

282911 Chlorates; of sodium 282919 Chlorates; other than sodium 282990 Perchlorates; bromates and perbromates; iodates and periodates

2830 Sulphides; polysulphides whether or not chemically defined 2

283010 Sulphides; of sodium, whether or not chemically defined 283090 Sulphides and polysulphides; whether or not chemically defined, other than sulphides of sodium

2831 Dithionites and sulphoxylates 2

283110 Dithionites and sulphoxylates; of sodium 283190 Dithionites and sulphoxylates; other than sodium

2832 Sulphites; thiosulphates 3

283210 Sulphites; of sodium 283220 Sulphites; other than of sodium 283230 Thiosulphates

2833 Sulphates; alums; peroxosulphates (persulphates) 10

283311 Sodium sulphates; disodium sulphate 283319 Sodium sulphates; other than disodium sulphate 283321 Sulphates; of magnesium 283322 Sulphates; of aluminium 283324 Sulphates; of nickel 283325 Sulphates; of copper 283327 Sulphates; of barium 283329 Sulphates; n.e.c. in item no. 2833.2 283330 Alums 283340 Peroxosulphates (persulphates)

2834 Nitrites; nitrates 3

283410 Nitrites 283421 Nitrates; of potassium 283429 Nitrates; of other than potassium

2835 Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and polyphosphates, whether or not chemically defined 8

2836 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate 8

283620 Carbonates; disodium carbonate 283630 Carbonates; sodium hydrogen carbonate (sodium bicarbonate) 283640 Carbonates; potassium carbonate 283650 Carbonates; calcium carbonate 283660 Carbonates; barium carbonate 283691 Carbonates; lithium carbonate 283692 Carbonates; strontium carbonate 283699 Carbonates; n.e.c. in heading no. 2836 and other than lithium or strontium

2837 Cyanides, cyanide oxides and complex cyanides 3

283711 Cyanides and cyanide oxides; of sodium 283719 Cyanides and cyanide oxides; other than of sodium 283720 Complex cyanides

2839 Silicates; commercial alkali metal silicates 3

283911 Silicates; sodium metasilicates 283919 Silicates; of sodium (excluding sodium metasilicates) 283990 Silicates; commercial alkali metal silicates, other than of sodium

2840 Borates; peroxoborates (perborates) 4

284011 Borates; disodium tetraborate (refined borax), anhydrous 284019 Borates; disodium tetraborate (refined borax), other than anhydrous 284020 Borates; n.e.c. in heading no. 2840 284030 Peroxoborates (perborates)

2841 Salts of oxometallic or peroxometallic acids 7

284130 Salts; sodium dichromate 284150 Salts; chromates, dichromates, peroxochromates; n.e.c. in heading no. 2841 284161 Salts; of oxometallic or peroxometallic acids, manganites, manganates and permanganates, potassium permanganate 284169 Salts; of oxometallic or peroxometallic acids, manganites, manganates and permanganates, other than potassium permanganate 284170 Salts; molybdates 284180 Salts; tungstates (wolframates) 284190 Salts of oxometallic or peroxometallic acids; n.e.c. in heading no. 2841

2842 Salts of inorganic acids or peroxoacids, n.e.c. including aluminosilicates whether or not chemically defined, but excluding azides 2

284210 Salts of inorganic acids or peroxoacids, double or complex silicates, including aluminosilicates, whether or not chemically defined, excluding azides 284290 Salts; of inorganic acids or peroxoacids, other than double or complex silicates, including aluminosilicates, whether or not chemically, excluding azides

2843 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals 5

284310 Colloidal precious metals; whether or not chemically defined 284321 Silver compounds; silver nitrates 284329 Silver compounds; excluding silver nitrates 284330 Gold compounds 284390 Inorganic or organic compounds of precious metals, n.e.c.; amalgams

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 8

284410 Uranium; natural uranium and its compounds, alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds 284420 Uranium; enriched in U235, plutonium, their compounds, alloys dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U235, plutonium or compounds of these products 284430 Uranium; depleted in U235, thorium, their compounds, alloys, dispersions (including cermets), ceramic products and mixtures containing uranium depleted in U235, thorium; compounds of these products 284441 Radioactive elements; tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds 284442 Radioactive elements; actinium-225, 227, californium-253, curium-240, 241, 242, 243, 244, einsteinium-253, 254, gadolinium-148, polonium-208, 209, 210, radium-223, uranium-230 or 232, compounds; alloys, dispersions, ceramic products and mixtures 284443 Radioactive elements, isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds 284444 Radioactive elements, isotopes, compounds n.e.c. in heading no. 2844, alloys, dispersions (including cermets), ceramic products, mixtures containing the elements, isotopes, compounds; radioactive residues 284450 Spent (irradiated) fuel elements (cartridges) of nuclear reactors

2845 Isotopes other than those of heading no. 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined 5

284510 Heavy water (deuterium oxide) 284520 Boron enriched in boron-10 and its compounds 284530 Lithium enriched in lithium-6 and its compounds 284540 Helium-3 284590 Isotopes other than those of heading no. 2844, 2845.20, 2845.30 or 2845.40; compounds, inorganic or organic, of such isotopes, whether or not chemically defined

2846 Compounds, inorganic or organic, of rare-earth metals; of yttrium or of scandium or of mixtures of these metals 2

284610 Cerium compounds 284690 Compounds, inorganic or organic (excluding cerium), of rare-earth metals, of yttrium, scandium or of mixtures of these metals

2847 Hydrogen peroxide; whether or not solidified with urea 1

284700 Hydrogen peroxide; whether or not solidified with urea

2849 Carbides, whether or not chemically defined 3

284910 Carbides; of calcium, whether or not chemically defined 284920 Carbides; of silicon, whether or not chemically defined 284990 Carbides; whether or not chemically defined, other than of calcium or silicon

2850 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading no. 2849 1

285000 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading no. 2849

2852 Inorganic or organic compounds of mercury, excluding amalgams, whether or not chemically defined 2

285210 Inorganic or organic compounds of mercury, excluding amalgams, chemically defined 285290 Inorganic or organic compounds of mercury; excluding amalgams, not chemically defined,

2853 Phosphides, chemically defined or not, not ferrophosphorus; other inorganic compounds n.e.c. (including distilled, conductivity water and water of like purity); liquid air, rare gases removed or not; compressed air; amalgams, not precious metal amalgams 2

285310 Inorganic compounds; cyanogen chloride (chlorcyan) 285390 Phosphides, chemically defined or not, not ferrophosphorus; other inorganic compounds n.e.c. (including distilled, conductivity water and water of like purity); liquid air, rare gases removed or not; compressed air; amalgams, not precious metal amalgams