28: INORGANIC CHEMICALS; ORGANIC OR INORGANIC COMPOUNDS OF PRECIOUS METALS, OF RAREEARTH METALS, OF RADIOACTIVE ELEMENTS OR OF ISOTOPES
2801: Fluorine, chlorine, bromine and iodine.
2802: Sulphur, sublimed or precipitated; colloidal sulphur.
2803: Carbon (carbon blacks and other forms of carbon not elsewhere specified or included).
2804: Hydrogen, rare gases and other nonmetals.
2805: Alkali or alkalineearth metals; rareearth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury.
2806: Hydrogen chloride (hydrochloric acid); chlorosulphuric acid.
2807: Sulphuric acid; oleum.
2808: Nitric acid; sulphonitric acids.
2809: Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined.
2810: Oxides of boron; boric acids.
2811: Other inorganic acids and other inorganic oxygen compounds of nonmetals.
2812: Halides and halide oxides of nonmetals.
2813: Sulphides of nonmetals; commercial phosphorus trisulphide.
2814: Ammonia, anhydrous or in aqueous solution.
2815: Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium.
2816: Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium.
2817: Zinc oxide; zinc peroxide.
2818: Artificial corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide.
2819: Chromium oxides and hydroxides.
2820: Manganese oxides.
2821: Iron oxides and hydroxides; earth colours containing 70 % or more by weight of combined iron evaluated as Fe2O3.
2822: Cobalt oxides and hydroxides; commercial cobalt oxides.
2823: Titanium oxides.
2824: Lead oxides; red lead and orange lead.
2825: Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides.
2826: Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts.
2827: Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides.
2828: Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites.
2829: Chlorates and perchlorates; bromates and perbromates; iodates and periodates.
2830: Sulphides; polysulphides, whether or not chemically defined.
2831: Dithionites and sulphoxylates.
2832: Sulphites; thiosulphates.
2833: Sulphates; alums; peroxosulphates (persulphates).
2834: Nitrites; nitrates.
2835: Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined.
2836: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate.
2837: Cyanides, cyanide oxides and complex cyanides.
2839: Silicates; commercial alkali metal silicates.
2840: Borates; peroxoborates (perborates).
2841: Salts of oxometallic or peroxometallic acids.
2842: Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides.
2843: Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals.
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.
2845: Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined.
2846: Compounds, inorganic or organic, of rareearth metals, of yttrium or of scandium or of mixtures of these metals.
2847: Hydrogen peroxide, whether or not solidified with urea.
2848: Phosphides, whether or not chemically defined, excluding ferrophosphorus.
2849: Carbides, whether or not chemically defined.
2850: Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49.
2852: Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams.
2853: 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.