HS Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
All 180 six-digit HS codes in this chapter, under 50 headings, with the official descriptions.
| HS code | Official description |
|---|---|
| 28.01 | Fluorine, chlorine, bromine and iodine. |
| 2801.10 | Chlorine |
| 2801.20 | Iodine |
| 2801.30 | Fluorine; bromine |
| 28.02 | Sulphur, sublimed or precipitated; colloidal sulphur. |
| 2802.00 | Sulphur, sublimed or precipitated; colloidal sulphur. |
| 28.03 | Carbon (carbon blacks and other forms of carbon not elsewhere specified or included). |
| 2803.00 | Carbon (carbon blacks and other forms of carbon not elsewhere specified or included). |
| 28.04 | Hydrogen, rare gases and other non-metals. |
| 2804.10 | Hydrogen |
| 2804.21 | ArgonRare gases |
| 2804.29 | OtherRare gases |
| 2804.30 | Nitrogen |
| 2804.40 | Oxygen |
| 2804.50 | Boron; tellurium |
| 2804.61 | Containing by weight not less than 99.99% of siliconSilicon |
| 2804.69 | OtherSilicon |
| 2804.70 | Phosphorus |
| 2804.80 | Arsenic |
| 2804.90 | Selenium |
| 28.05 | Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury. |
| 2805.11 | SodiumAlkali or alkaline-earth metals |
| 2805.12 | CalciumAlkali or alkaline-earth metals |
| 2805.19 | OtherAlkali or alkaline-earth metals |
| 2805.30 | Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed |
| 2805.40 | Mercury |
| 28.06 | Hydrogen chloride (hydrochloric acid); chlorosulphuric acid. |
| 2806.10 | Hydrogen chloride (hydrochloric acid) |
| 2806.20 | Chlorosulphuric acid |
| 28.07 | Sulphuric acid; oleum. |
| 2807.00 | Sulphuric acid; oleum. |
| 28.08 | Nitric acid; sulphonitric acids. |
| 2808.00 | Nitric acid; sulphonitric acids. |
| 28.09 | Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined. |
| 2809.10 | Diphosphorus pentaoxide |
| 2809.20 | Phosphoric acid and polyphosphoric acids |
| 28.10 | Oxides of boron; boric acids. |
| 2810.00 | Oxides of boron; boric acids. |
| 28.11 | Other inorganic acids and other inorganic oxygen compounds of non-metals. |
| 2811.11 | Hydrogen fluoride (hydrofluoric acid)Other inorganic acids |
| 2811.12 | Hydrogen cyanide (hydrocyanic acid)Other inorganic acids |
| 2811.19 | OtherOther inorganic acids |
| 2811.21 | Carbon dioxideOther inorganic oxygen compounds of non-metals |
| 2811.22 | Silicon dioxideOther inorganic oxygen compounds of non-metals |
| 2811.29 | OtherOther inorganic oxygen compounds of non-metals |
| 28.12 | Halides and halide oxides of non-metals. |
| 2812.11 | Carbonyl dichloride (phosgene)Chlorides and chloride oxides |
| 2812.12 | Phosphorus oxychlorideChlorides and chloride oxides |
| 2812.13 | Phosphorus trichlorideChlorides and chloride oxides |
| 2812.14 | Phosphorus pentachlorideChlorides and chloride oxides |
| 2812.15 | Sulphur monochlorideChlorides and chloride oxides |
| 2812.16 | Sulphur dichlorideChlorides and chloride oxides |
| 2812.17 | Thionyl chlorideChlorides and chloride oxides |
| 2812.19 | OtherChlorides and chloride oxides |
| 2812.90 | Other |
| 28.13 | Sulphides of non-metals; commercial phosphorus trisulphide. |
| 2813.10 | Carbon disulphide |
| 2813.90 | Other |
| 28.14 | Ammonia, anhydrous or in aqueous solution. |
| 2814.10 | Anhydrous ammonia |
| 2814.20 | Ammonia in aqueous solution |
| 28.15 | Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium. |
| 2815.11 | SolidSodium hydroxide (caustic soda) |
| 2815.12 | In aqueous solution (soda lye or liquid soda)Sodium hydroxide (caustic soda) |
| 2815.20 | Potassium hydroxide (caustic potash) |
| 2815.30 | Peroxides of sodium or potassium |
| 28.16 | Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium. |
| 2816.10 | Hydroxide and peroxide of magnesium |
| 2816.40 | Oxides, hydroxides and peroxides, of strontium or barium |
| 28.17 | Zinc oxide; zinc peroxide. |
| 2817.00 | Zinc oxide; zinc peroxide. |
| 28.18 | Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide. |
| 2818.10 | Artificial corundum, whether or not chemically defined |
| 2818.20 | Aluminum oxide, other than artificial corundum |
| 2818.30 | Aluminum hydroxide |
| 28.19 | Chromium oxides and hydroxides. |
| 2819.10 | Chromium trioxide |
| 2819.90 | Other |
| 28.20 | Manganese oxides. |
| 2820.10 | Manganese dioxide |
| 2820.90 | Other |
| 28.21 | Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2O3. |
| 2821.10 | Iron oxides and hydroxides |
| 2821.20 | Earth colours |
| 28.22 | Cobalt oxides and hydroxides; commercial cobalt oxides. |
| 2822.00 | Cobalt oxides and hydroxides; commercial cobalt oxides. |
| 28.23 | Titanium oxides. |
| 2823.00 | Titanium oxides. |
| 28.24 | Lead oxides; red lead and orange lead. |
| 2824.10 | Lead monoxide (litharge, massicot) |
| 2824.90 | Other |
| 28.25 | Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides. |
| 2825.10 | Hydrazine and hydroxylamine and their inorganic salts |
| 2825.20 | Lithium oxide and hydroxide |
| 2825.30 | Vanadium oxides and hydroxides |
| 2825.40 | Nickel oxides and hydroxides |
| 2825.50 | Copper oxides and hydroxides |
| 2825.60 | Germanium oxides and zirconium dioxide |
| 2825.70 | Molybdenum oxides and hydroxides |
| 2825.80 | Antimony oxides |
| 2825.90 | Other |
| 28.26 | Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts. |
| 2826.12 | Of aluminumFluorides |
| 2826.19 | OtherFluorides |
| 2826.30 | Sodium hexafluoroaluminate (synthetic cryolite) |
| 2826.90 | Other |
| 28.27 | Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides. |
| 2827.10 | Ammonium chloride |
| 2827.20 | Calcium chloride |
| 2827.31 | Of magnesiumOther chlorides |
| 2827.32 | Of aluminumOther chlorides |
| 2827.35 | Of nickelOther chlorides |
| 2827.39 | OtherOther chlorides |
| 2827.41 | Of copperChloride oxides and chloride hydroxides |
| 2827.49 | OtherChloride oxides and chloride hydroxides |
| 2827.51 | Bromides of sodium or of potassiumBromides and bromide oxides |
| 2827.59 | OtherBromides and bromide oxides |
| 2827.60 | Iodides and iodide oxides |
| 28.28 | Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites. |
| 2828.10 | Commercial calcium hypochlorite and other calcium hypochlorites |
| 2828.90 | Other |
| 28.29 | Chlorates and perchlorates; bromates and perbromates; iodates and periodates. |
| 2829.11 | Of sodiumChlorates |
| 2829.19 | OtherChlorates |
| 2829.90 | Other |
| 28.30 | Sulphides; polysulphides, whether or not chemically defined. |
| 2830.10 | Sodium sulphides |
| 2830.90 | Other |
| 28.31 | Dithionites and sulphoxylates. |
| 2831.10 | Of sodium |
| 2831.90 | Other |
| 28.32 | Sulphites; thiosulphates. |
| 2832.10 | Sodium sulphites |
| 2832.20 | Other sulphites |
| 2832.30 | Thiosulphates |
| 28.33 | Sulphates; alums; peroxosulphates (persulphates). |
| 2833.11 | Disodium sulphateSodium sulphates |
| 2833.19 | OtherSodium sulphates |
| 2833.21 | Of magnesiumOther sulphates |
| 2833.22 | Of aluminumOther sulphates |
| 2833.24 | Of nickelOther sulphates |
| 2833.25 | Of copperOther sulphates |
| 2833.27 | Of bariumOther sulphates |
| 2833.29 | OtherOther sulphates |
| 2833.30 | Alums |
| 2833.40 | Peroxosulphates (persulphates) |
| 28.34 | Nitrites; nitrates. |
| 2834.10 | Nitrites |
| 2834.21 | Of potassiumNitrates |
| 2834.29 | OtherNitrates |
| 28.35 | Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined. |
| 2835.10 | Phosphinates (hypophosphites) and phosphonates (phosphites) |
| 2835.22 | Of mono- or disodiumPhosphates |
| 2835.24 | Of potassiumPhosphates |
| 2835.25 | Calcium hydrogenorthophosphate ("dicalcium phosphate")Phosphates |
| 2835.26 | Other phosphates of calciumPhosphates |
| 2835.29 | OtherPhosphates |
| 2835.31 | Sodium triphosphate (sodium tripolyphosphate)Polyphosphates |
| 2835.39 | OtherPolyphosphates |
| 28.36 | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate. |
| 2836.20 | Disodium carbonate |
| 2836.30 | Sodium hydrogencarbonate (sodium bicarbonate) |
| 2836.40 | Potassium carbonates |
| 2836.50 | Calcium carbonate |
| 2836.60 | Barium carbonate |
| 2836.91 | Lithium carbonatesOther |
| 2836.92 | Strontium carbonateOther |
| 2836.99 | OtherOther |
| 28.37 | Cyanides, cyanide oxides and complex cyanides. |
| 2837.11 | Of sodiumCyanides and cyanide oxides |
| 2837.19 | OtherCyanides and cyanide oxides |
| 2837.20 | Complex cyanides |
| 28.39 | Silicates; commercial alkali metal silicates. |
| 2839.11 | Sodium metasilicatesOf sodium |
| 2839.19 | OtherOf sodium |
| 2839.90 | Other |
| 28.40 | Borates; peroxoborates (perborates). |
| 2840.11 | AnhydrousDisodium tetraborate (refined borax) |
| 2840.19 | OtherDisodium tetraborate (refined borax) |
| 2840.20 | Other borates |
| 2840.30 | Peroxoborates (perborates) |
| 28.41 | Salts of oxometallic or peroxometallic acids. |
| 2841.30 | Sodium dichromate |
| 2841.50 | Other chromates and dichromates; peroxochromates |
| 2841.61 | Potassium permanganateManganites, manganates and permanganates |
| 2841.69 | OtherManganites, manganates and permanganates |
| 2841.70 | Molybdates |
| 2841.80 | Tungstates (wolframates) |
| 2841.90 | Other |
| 28.42 | Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides. |
| 2842.10 | Double or complex silicates, including aluminosilicates whether or not chemically defined |
| 2842.90 | Other |
| 28.43 | Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals. |
| 2843.10 | Colloidal precious metals |
| 2843.21 | Silver nitrateSilver compounds |
| 2843.29 | OtherSilver compounds |
| 2843.30 | Gold compounds |
| 2843.90 | Other compounds; amalgams |
| 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. |
| 2844.10 | Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds |
| 2844.20 | Uranium enriched in U235 and its compounds; plutonium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U235, plutonium or compounds of these products |
| 2844.30 | Uranium depleted in U235 and its compounds; thorium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium depleted in U235, thorium or compounds of these products |
| 2844.41 | Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compoundsRadioactive elements and isotopes and compounds other than those of subheading 2844.10, 2844.20 or 2844.30; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues |
| 2844.42 | Actinium-225, actinium-227, californium-253, curium-240, curium-241, curium-242, curium-243, curium-244, einsteinium-253, einsteinium-254, gadolinium-148, polonium-208, polonium-209, polonium-210, radium-223, uranium-230 or uranium-232, and their compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements or compoundsRadioactive elements and isotopes and compounds other than those of subheading 2844.10, 2844.20 or 2844.30; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues |
| 2844.43 | Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compoundsRadioactive elements and isotopes and compounds other than those of subheading 2844.10, 2844.20 or 2844.30; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues |
| 2844.44 | Radioactive residuesRadioactive elements and isotopes and compounds other than those of subheading 2844.10, 2844.20 or 2844.30; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues |
| 2844.50 | Spent (irradiated) fuel elements (cartridges) of nuclear reactors |
| 28.45 | Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined. |
| 2845.10 | Heavy water (deuterium oxide) |
| 2845.20 | Boron enriched in boron-10 and its compounds |
| 2845.30 | Lithium enriched in lithium-6 and its compounds |
| 2845.40 | Helium-3 |
| 2845.90 | Other |
| 28.46 | Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium or of mixtures of these metals. |
| 2846.10 | Cerium compounds |
| 2846.90 | Other |
| 28.47 | Hydrogen peroxide, whether or not solidified with urea. |
| 2847.00 | Hydrogen peroxide, whether or not solidified with urea. |
| 28.49 | Carbides, whether or not chemically defined. |
| 2849.10 | Of calcium |
| 2849.20 | Of silicon |
| 2849.90 | Other |
| 28.50 | Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49. |
| 2850.00 | Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49. |
| 28.52 | Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams. |
| 2852.10 | Chemically defined |
| 2852.90 | Other |
| 28.53 | Phosphides, whether or not chemically defined, excluding ferrophosphorus; 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. |
| 2853.10 | Cyanogen chloride (chlorcyan) |
| 2853.90 | Other |
Official descriptions: CBSA Customs Tariff, 2026 (version 2). These are six-digit HS subheadings, shared by Canada, the United States and Mexico. Import entries need the full ten-digit code for the importing country: check the CBSA Customs Tariff for Canada or the U.S. Harmonized Tariff Schedule, and confirm the classification with your customs broker.