Headings in This Chapter 50
28.01 Fluorine, chlorine, bromine and iodine 28.02 Sulphur; sublimed or precipitated, colloidal sulphur 28.03 Carbon; carbon blacks and other forms of carbon n.e.c. 28.04 Hydrogen, rare gases and other non-metals 28.05 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury 28.06 Hydrogen chloride (hydrochloric acid); chlorosulphuric acid 28.07 Sulphuric acid; oleum 28.08 Nitric acid; sulphonitric acids 28.09 Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined 28.10 Oxides of boron; boric acids 28.11 Inorganic acids and other inorganic oxygen compounds of non-metals; n.e.c. in heading no. 2806 to 2810 28.12 Halides and halide oxides of non-metals 28.13 Sulphides of non-metals; commercial phosphorus trisulphide 28.14 Ammonia; anhydrous or in aqueous solution 28.15 Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium 28.16 Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides of strontium or barium 28.17 Zinc; oxide and peroxide 28.18 Aluminium oxide (including artificial corundum); aluminium hydroxide 28.19 Chromium oxides and hydroxides 28.20 Manganese oxides 28.21 Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2o3 28.22 Cobalt oxides and hydroxides; commercial cobalt oxides 28.23 Titanium oxides 28.24 Lead oxides; red lead and orange lead 28.25 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides 28.26 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts 28.27 Chlorides; chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides 28.28 Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites 28.29 Chlorates and perchlorates; bromates and perbromates; iodates and periodates 28.30 Sulphides; polysulphides whether or not chemically defined 28.31 Dithionites and sulphoxylates 28.32 Sulphites; thiosulphates 28.33 Sulphates; alums; peroxosulphates (persulphates) 28.34 Nitrites; nitrates 28.35 Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and polyphosphates, whether or not chemically defined 28.36 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate 28.37 Cyanides, cyanide oxides and complex cyanides 28.39 Silicates; commercial alkali metal silicates 28.40 Borates; peroxoborates (perborates) 28.41 Salts of oxometallic or peroxometallic acids 28.42 Salts of inorganic acids or peroxoacids, n.e.c. including aluminosilicates whether or not chemically defined, but excluding azides 28.43 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals 28.44 Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes); and their compounds; mixtures and residues containing these products 28.45 Isotopes other than those of heading no. 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined 28.46 Compounds, inorganic or organic, of rare-earth metals; of yttrium or of scandium or of mixtures of these metals 28.47 Hydrogen peroxide; whether or not solidified with urea 28.49 Carbides, whether or not chemically defined 28.50 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading no. 2849 28.52 Inorganic or organic compounds of mercury, excluding amalgams, whether or not chemically defined 28.53 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
Industry
This code belongs to the Chemicals industry.