28 Inorganic Chemicals, Organic or Inorganic Compounds of Precious Metals, of Rare-earth 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`, n.e.s. 2804 Hydrogen, rare gases and other non-metals 2805 Alkali or alkaline-earth metals, rare-earth 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 Inorganic acids and inorganic oxygen compounds of non-metals (excl. hydrogen chloride `hydrochloric acid`, chlorosulphuric acid, sulphuric acid, oleum, nitric acid, sulphonitric acids, diphosphorus pentaoxide, phosphoric acid, polyphosphoric acids, oxides of boron and boric acids) 2812 Halides and halide oxides of non-metals 2813 Sulphides of non-metals, 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% 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, inorganic bases, metal oxides, hydroxides and peroxides, n.e.s. 2826 Fluorides, fluorosilicates, fluoroaluminates and other complex fluorine salts (excl. inorganic or organic compounds of mercury) 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 sulfoxylates 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 2838 Fulminates, cyanates and thiocyanates 2839 Silicates, commercial alkali metal silicates (excl. inorganic or organic compounds of mercury) 2840 Borates, peroxoborates `perborates` 2841 Salts of oxometallic or peroxometallic acids 2842 Salts of inorganic acids or peroxoacids, incl. aluminosilicates whether or not chemically defined (excl. of oxometallic or peroxometallic acids and azides, and inorganic or organic compounds of mercury) 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, incl. their fissile or fertile chemical elements and isotopes, and their compounds, mixtures and residues containing these products 2845 Non-radioactive isotopes, inorganic or organic compounds 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 2847 Hydrogen peroxide, whether or not solidified with urea 2848 Phosphides, whether or not chemically defined (excl. ferrophosphorus, and inorganic or organic compounds of mercury whether or not chemically defined) 2849 Carbides, whether or not chemically defined 2850 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined (excl. compounds which are also carbides of heading 2849, and inorganic or organic compounds of mercury whether or not chemically defined) 2851 Inorganic compounds, incl. distilled or conductivity water and water of similar purity, n.e.s., liquid air, whether or not rare gases have been removed, compressed air, amalgams (other than amalgams of precious metals) 2852 Compounds, inorganic or organic, of mercury, whether or not chemically defined (excl. amalgams) 2853 Phosphides, whether or not chemically defined (excl. ferrophosphorus), inorganic compounds, incl. distilled or conductivity water and water of similar purity, n.e.s., liquid air, whether or not rare gases have been removed, compressed air, amalgams (excl. amalgams of precious metals) Chapter 28: Inorganic Chemicals, Organic or Inorganic Compounds of Precious Metals, of Rare-earth Metals, of Radioactive Elements or of Isotopes