Subheading 280110: Chlorine
Subheading 280120: Iodine
Subheading 280130: Fluorine; Bromine
Subheading 280200: Sulphur; Sublimed or Precipitated, Colloidal Sulphur
Subheading 280300: Carbon; Carbon Blacks and other Forms of Carbon N.E.C.
Subheading 280410: Hydrogen
Subheading 280421: Gases, Rare; Argon
Subheading 280429: Gases, Rare; other than Argon
Subheading 280430: Nitrogen
Subheading 280440: Oxygen
Subheading 280450: Boron; Tellurium
Subheading 280461: Silicon; Containing by Weight not Less than 99.99% of Silicon
Subheading 280469: Silicon; Containing by Weight Less than 99.99% of Silicon
Subheading 280470: Phosphorus
Subheading 280480: Arsenic
Subheading 280490: Selenium
Subheading 280511: Alkali or Alkali-earth Metals; Sodium
Subheading 280512: Alkali or Alkali-earth Metals; Calcium
Subheading 280519: Alkali or Alkali-earth Metals; other than Sodium and Calcium
Subheading 280530: Earth-metals, Rare; Scandium and Yttrium, whether or not Intermixed or Interalloyed
Subheading 280540: Mercury
Subheading 280610: Hydrogen Chloride (Hydrochloric Acid)
Subheading 280620: Chlorosulphuric Acid
Subheading 280700: Sulphuric Acid; Oleum
Subheading 280800: Nitric Acid; Sulphonitric Acids
Subheading 280910: Diphosphorus Pentoxide
Subheading 280920: Phosphoric Acid and Polyphosphoric Acids
Subheading 281000: Oxides of Boron; Boric Acids
Subheading 281111: Hydrogen Fluoride (Hydrofluoric Acid)
Subheading 281112: Hydrogen Cyanide (Hydrocyanic Acid)
Subheading 281119: Inorganic Acids; other than Hydrogen Fluoride
Subheading 281121: Carbon Dioxide
Subheading 281122: Silicon Dioxide
Subheading 281129: Inorganic Oxygen Compounds; of Non-metals, N.E.C. in Item no. 2811.2
Subheading 281211: Carbonyl Dichloride (Phosgene)
Subheading 281212: Phosphorus Oxychloride
Subheading 281213: Phosphorus Trichloride
Subheading 281214: Phosphorus Pentachloride
Subheading 281215: Sulphur Monochloride
Subheading 281216: Sulphur Dichloride
Subheading 281217: Thionyl Chloride
Subheading 281219: Arsenic Trichloride and other Chlorides and Chloride Oxides, N.E.C. in Item no. 2812
Subheading 281290: Halides and Halide Oxides of Non-metals; Excluding Chloride
Subheading 281310: Carbon Disulphide
Subheading 281390: Sulphides of Non-metals, (Excluding Carbon); Commercial Phosphorus Trisulphide
Subheading 281410: Ammonia; Anhydrous
Subheading 281420: Ammonia; in Aqueous Solution
Subheading 281511: Sodium Hydroxide (Caustic Soda); Solid
Subheading 281512: Sodium Hydroxide (Caustic Soda); in Aqueous Solution (Soda Lye or Liquid Soda)
Subheading 281520: Potassium Hydroxide (Caustic Potash)
Subheading 281530: Peroxides of Sodium or Potassium
Subheading 281610: Hydroxide and Peroxide of Magnesium
Subheading 281640: Oxides, Hydroxides and Peroxides, of Strontium or Barium
Subheading 281700: Zinc; Oxide and Peroxide
Subheading 281810: Aluminium Oxide; Artificial Corundum
Subheading 281820: Aluminium Oxide; other than Artificial Corundum
Subheading 281830: Aluminium Hydroxide
Subheading 281910: Chromium Trioxide
Subheading 281990: Chromium Oxides and Hydroxides; Excluding Chromium Trioxide
Subheading 282010: Manganese Dioxide
Subheading 282090: Manganese Oxides; Excluding Manganese Dioxide
Subheading 282110: Iron Oxides and Hydroxides
Subheading 282120: Earth Colours; Containing 70% or more by Weight of Combined Iron Evaluated as Fe2o3
Subheading 282200: Cobalt Oxides and Hydroxides; Commercial Cobalt Oxides
Subheading 282300: Titanium Oxides
Subheading 282410: Lead; Lead Monoxide (Litharge, Massicot)
Subheading 282490: Lead Oxides; N.E.C. in Heading no. 2824
Subheading 282510: Hydrazine and Hydroxylamine and their Inorganic Salts
Subheading 282520: Lithium Oxide and Hydroxide
Subheading 282530: Vanadium Oxides and Hydroxides
Subheading 282540: Nickel Oxides and Hydroxides
Subheading 282550: Copper Oxides and Hydroxides
Subheading 282560: Germanium Oxides and Zirconium Dioxide
Subheading 282570: Molybdenum Oxides and Hydroxides
Subheading 282580: Antimony Oxides
Subheading 282590: Inorganic Bases, Metal Oxides, Hydroxides and Peroxides; N.E.C. in Heading no. 2825
Subheading 282612: Fluorides; of Aluminium
Subheading 282619: Fluorides; other than of Aluminium
Subheading 282630: Sodium Hexafluoroaluminate (Synthetic Cryolite)
Subheading 282690: Fluorides; Fluorosilicates, Fluoroaluminates and other Complex Fluorine Salts, N.E.C. in Heading no. 2826
Subheading 282710: Chlorides; of Ammonium
Subheading 282720: Chlorides; of Calcium
Subheading 282731: Chlorides; of Magnesium
Subheading 282732: Chlorides; of Aluminium
Subheading 282735: Chlorides; of Nickel
Subheading 282739: Chlorides; other than of Ammonium, Calcium, Magnesium, Aluminium and Nickel
Subheading 282741: Chloride Oxides and Chloride Hydroxides; of Copper
Subheading 282749: Chloride Oxides and Chloride Hydroxides; other than of Copper
Subheading 282751: Bromides; of Sodium or of Potassium
Subheading 282759: Bromides and Bromide Oxides; other than Item no. 2827.51
Subheading 282760: Iodides and Iodide Oxides
Subheading 282810: Hypochlorites; Commercial Calcium Hypochlorite and other Calcium Hypochlorites
Subheading 282890: Hypochlorites; N.E.C. in Heading no. 2828
Subheading 282911: Chlorates; of Sodium
Subheading 282919: Chlorates; other than Sodium
Subheading 282990: Perchlorates; Bromates and Perbromates; Iodates and Periodates
Subheading 283010: Sulphides; of Sodium, whether or not Chemically Defined
Subheading 283090: Sulphides and Polysulphides; whether or not Chemically Defined, other than Sulphides of Sodium
Subheading 283110: Dithionites and Sulphoxylates; of Sodium
Subheading 283190: Dithionites and Sulphoxylates; other than Sodium
Subheading 283210: Sulphites; of Sodium
Subheading 283220: Sulphites; other than of Sodium
Subheading 283230: Thiosulphates
Subheading 283311: Sodium Sulphates; Disodium Sulphate
Subheading 283319: Sodium Sulphates; other than Disodium Sulphate
Subheading 283321: Sulphates; of Magnesium
Subheading 283322: Sulphates; of Aluminium
Subheading 283324: Sulphates; of Nickel
Subheading 283325: Sulphates; of Copper
Subheading 283327: Sulphates; of Barium
Subheading 283329: Sulphates; N.E.C. in Item no. 2833.2
Subheading 283330: Alums
Subheading 283340: Peroxosulphates (Persulphates)
Subheading 283410: Nitrites
Subheading 283421: Nitrates; of Potassium
Subheading 283429: Nitrates; of other than Potassium
Subheading 283510: Phosphinates (Hypophosphites) and Phosphonates (Phosphites), whether or not Chemically Defined
Subheading 283522: Phosphates; of Mono- or Disodium, whether or not Chemically Defined
Subheading 283524: Phosphates; of Potassium, whether or not Chemically Defined
Subheading 283525: Phosphates; Calcium Hydrogenorthophosphate (Dicalcium Phosphate), whether or not Chemically Defined
Subheading 283526: Phosphates; of Calcium N.E.C. in Item no. 2835.25, whether or not Chemically Defined
Subheading 283529: Phosphates; (other than of Mono- or Disodium, other than of Potassium or of Calcium Hydrogenorthophosphate (Dicalcium Phosphate) and Excluding other Phosphates of Calcium), whether or not Chemically Defined
Subheading 283531: Polyphosphates; Sodium Triphosphate (Sodium Tripolyphosphate), whether or not Chemically Defined
Subheading 283539: Polyphosphates; other than Sodium Triphosphate (Sodium Tripolyphosphate), whether or not Chemically Defined
Subheading 283620: Carbonates; Disodium Carbonate
Subheading 283630: Carbonates; Sodium Hydrogen Carbonate (Sodium Bicarbonate)
Subheading 283640: Carbonates; Potassium Carbonate
Subheading 283650: Carbonates; Calcium Carbonate
Subheading 283660: Carbonates; Barium Carbonate
Subheading 283691: Carbonates; Lithium Carbonate
Subheading 283692: Carbonates; Strontium Carbonate
Subheading 283699: Carbonates; N.E.C. in Heading no. 2836 and other than Lithium or Strontium
Subheading 283711: Cyanides and Cyanide Oxides; of Sodium
Subheading 283719: Cyanides and Cyanide Oxides; other than of Sodium
Subheading 283720: Complex Cyanides
Subheading 283911: Silicates; Sodium Metasilicates
Subheading 283919: Silicates; of Sodium (Excluding Sodium Metasilicates)
Subheading 283990: Silicates; Commercial Alkali Metal Silicates, other than of Sodium
Subheading 284011: Borates; Disodium Tetraborate (Refined Borax), Anhydrous
Subheading 284019: Borates; Disodium Tetraborate (Refined Borax), other than Anhydrous
Subheading 284020: Borates; N.E.C. in Heading no. 2840
Subheading 284030: Peroxoborates (Perborates)
Subheading 284130: Salts; Sodium Dichromate
Subheading 284150: Salts; Chromates, Dichromates, Peroxochromates; N.E.C. in Heading no. 2841
Subheading 284161: Salts; of Oxometallic or Peroxometallic Acids, Manganites, Manganates and Permanganates, Potassium Permanganate
Subheading 284169: Salts; of Oxometallic or Peroxometallic Acids, Manganites, Manganates and Permanganates, other than Potassium Permanganate
Subheading 284170: Salts; Molybdates
Subheading 284180: Salts; Tungstates (Wolframates)
Subheading 284190: Salts of Oxometallic or Peroxometallic Acids; N.E.C. in Heading no. 2841
Subheading 284210: Salts of Inorganic Acids or Peroxoacids, Double or Complex Silicates, Including Aluminosilicates, whether or not Chemically Defined, Excluding Azides
Subheading 284290: Salts; of Inorganic Acids or Peroxoacids, other than Double or Complex Silicates, Including Aluminosilicates, whether or not Chemically, Excluding Azides
Subheading 284310: Colloidal Precious Metals; whether or not Chemically Defined
Subheading 284321: Silver Compounds; Silver Nitrates
Subheading 284329: Silver Compounds; Excluding Silver Nitrates
Subheading 284330: Gold Compounds
Subheading 284390: Inorganic or Organic Compounds of Precious Metals, N.E.C.; Amalgams
Subheading 284410: Uranium; Natural Uranium and its Compounds, Alloys, Dispersions (Including Cermets), Ceramic Products and Mixtures Containing Natural Uranium or Natural Uranium Compounds
Subheading 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
Subheading 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
Subheading 284441: Radioactive Elements; Tritium and its Compounds; Alloys, Dispersions (Including Cermets), Ceramic Products and Mixtures Containing Tritium or its Compounds
Subheading 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
Subheading 284443: Radioactive Elements, Isotopes and Compounds; other Alloys, Dispersions (Including Cermets), Ceramic Products and Mixtures Containing these Elements, Isotopes or Compounds
Subheading 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
Subheading 284450: Spent (Irradiated) Fuel Elements (Cartridges) of Nuclear Reactors
Subheading 284510: Heavy Water (Deuterium Oxide)
Subheading 284520: Boron Enriched in Boron-10 and its Compounds
Subheading 284530: Lithium Enriched in Lithium-6 and its Compounds
Subheading 284540: Helium-3
Subheading 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
Subheading 284610: Cerium Compounds
Subheading 284690: Compounds, Inorganic or Organic (Excluding Cerium), of Rare-earth Metals, of Yttrium, Scandium or of Mixtures of these Metals
Subheading 284700: Hydrogen Peroxide; whether or not Solidified with Urea
Subheading 284910: Carbides; of Calcium, whether or not Chemically Defined
Subheading 284920: Carbides; of Silicon, whether or not Chemically Defined
Subheading 284990: Carbides; whether or not Chemically Defined, other than of Calcium or Silicon
Subheading 285000: Hydrides, Nitrides, Azides, Silicides and Borides, whether or not Chemically Defined, other than Compounds Which Are Also Carbides of Heading no. 2849
Subheading 285210: Inorganic or Organic Compounds of Mercury, Excluding Amalgams, Chemically Defined
Subheading 285290: Inorganic or Organic Compounds of Mercury; Excluding Amalgams, not Chemically Defined
Subheading 285310: Inorganic Compounds; Cyanogen Chloride (Chlorcyan)
Subheading 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