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HTS chapter 28: duty rates for all 274 tariff lines

Fluorine, chlorine, bromine and iodine. 80 lines are duty-free at the general rate; 249 are on a Section 301 China list.

Official USITC HTS, 2026HTSRev20

2801: Fluorine, chlorine, bromine and iodine

LineDescriptionGeneralSection 301 (China)
2801.10.00Fluorine, chlorine, bromine and iodine: ChlorineFreeList 3 +25%
2801.20.00Fluorine, chlorine, bromine and iodine: IodineFreeList 3 +25%
2801.30.10Fluorine; bromine: Fluorine3.7%List 3 +25%
2801.30.20Fluorine; bromine: Bromine5.5%List 3 +25%

2802: Sulfur, sublimed or precipitated; colloidal sulfur

LineDescriptionGeneralSection 301 (China)
2802.00.00Sulfur, sublimed or precipitated; colloidal sulfurFreeList 3 +25%

2803: Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)

LineDescriptionGeneralSection 301 (China)
2803.00.00Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)FreeList 3 +25%

2804: Hydrogen, rare gases and other nonmetals

LineDescriptionGeneralSection 301 (China)
2804.10.00Hydrogen, rare gases and other nonmetals: Hydrogen3.7%List 3 +25%
2804.21.00Rare gases: Argon3.7%List 3 +25%
2804.29.00Rare gases: Other3.7%List 3 +25%
2804.30.00Hydrogen, rare gases and other nonmetals: Nitrogen3.7%List 3 +25%
2804.40.00Hydrogen, rare gases and other nonmetals: Oxygen3.7%List 3 +25%
2804.50.00Hydrogen, rare gases and other nonmetals: Boron; telluriumFreeList 3 +25%
2804.61.00Containing by weight not less than 99.99 percent of siliconFreeFour-year review +50%
2804.69.10Containing by weight less than 99.99 percent but not less than 99 percent of silicon5.3%none
2804.69.50Other: Other5.5%none
2804.70.00Hydrogen, rare gases and other nonmetals: PhosphorusFreenone
2804.80.00Hydrogen, rare gases and other nonmetals: ArsenicFreeList 3 +25%
2804.90.00Hydrogen, rare gases and other nonmetals: SeleniumFreeList 3 +25%

2805: Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury

LineDescriptionGeneralSection 301 (China)
2805.11.00Alkali or alkaline-earth metals: Sodium5.3%List 3 +25% (1 product exclusion may apply)
2805.12.00Alkali or alkaline-earth metals: Calcium3%List 3 +25%
2805.19.10Other: Strontium3.7%List 3 +25%
2805.19.20Other: BariumFreeList 3 +25%
2805.19.90Other: Other5.5%List 3 +25%
2805.30.00Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed5%none
2805.40.00Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whethe…: Mercury1.7%List 3 +25%

2806: Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid

LineDescriptionGeneralSection 301 (China)
2806.10.00Hydrogen chloride (Hydrochloric acid)FreeList 3 +25%
2806.20.00Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid: Chlorosulfuric acid4.2%List 3 +25%

2807: Sulfuric acid; oleum

LineDescriptionGeneralSection 301 (China)
2807.00.00Sulfuric acid; oleumFreeList 3 +25%

2808: Nitric acid; sulfonitric acids

LineDescriptionGeneralSection 301 (China)
2808.00.00Nitric acid; sulfonitric acidsFreeList 3 +25%

2809: Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined

LineDescriptionGeneralSection 301 (China)
2809.10.00Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not ch…: Diphosphoru…FreeList 3 +25%
2809.20.00Phosphoric acid and polyphosphoric acidsFreeList 3 +25%

2810: Oxides of boron; boric acids

LineDescriptionGeneralSection 301 (China)
2810.00.00Oxides of boron; boric acids1.5%List 3 +25%

2811: Other inorganic acids and other inorganic oxygen compounds of nonmetals

LineDescriptionGeneralSection 301 (China)
2811.11.00Hydrogen fluoride (Hydrofluoric acid)FreeList 3 +25%
2811.12.00Hydrogen cyanide (hydrocyanic acid)4.2%List 3 +25%
2811.19.10Other: Arsenic acid2.3%List 4A +7.5%
2811.19.30Other: Hydrobromic acidFreeList 3 +25%
2811.19.61Other: Other4.2%List 3 +25%
2811.21.00Other inorganic oxygen compounds of nonmetals: Carbon dioxide3.7%List 3 +25%
2811.22.10Silicon dioxide: Synthetic silica gel3.7%List 3 +25%
2811.22.50Silicon dioxide: OtherFreeList 3 +25%
2811.29.10Other: Arsenic trioxideFreeList 3 +25%
2811.29.20Other: Selenium dioxideFreeList 3 +25%
2811.29.30Other: Sulfur dioxide4.2%List 3 +25%
2811.29.50Other: Other3.7%List 3 +25%

2812: Halides and halide oxides of nonmetals

LineDescriptionGeneralSection 301 (China)
2812.11.00Carbonyl dichloride (phosgene)3.7%List 3 +25%
2812.12.00Chlorides and chloride oxides: Phosphorous oxychloride3.7%List 3 +25%
2812.13.00Chlorides and chloride oxides: Phosphorous trichloride3.7%List 3 +25%
2812.14.00Chlorides and chloride oxides: Phosphorous pentachlorideFreeList 3 +25%
2812.15.00Chlorides and chloride oxides: Sulfur monochloride3.7%List 3 +25%
2812.16.00Chlorides and chloride oxides: Sulfur dichloride3.7%List 3 +25%
2812.17.00Chlorides and chloride oxides: Thionyl chloride3.7%List 3 +25%
2812.19.00Chlorides and chloride oxides: Other3.7%List 3 +25%
2812.90.00Halides and halide oxides of nonmetals: Other3.7%List 3 +25%

2813: Sulfides of nonmetals; commercial phosphorus trisulfide

LineDescriptionGeneralSection 301 (China)
2813.10.00Sulfides of nonmetals; commercial phosphorus trisulfide: Carbon disulfide3.7%List 3 +25%
2813.90.10Other: Of arsenicFreeList 3 +25%
2813.90.20Other: Of phosphorusFreeList 3 +25%
2813.90.50Other: Other3.7%List 3 +25%

2814: Ammonia, anhydrous or in aqueous solution

LineDescriptionGeneralSection 301 (China)
2814.10.00Ammonia, anhydrous or in aqueous solution: Anhydrous ammoniaFreeList 3 +25%
2814.20.00Ammonia, anhydrous or in aqueous solution: Ammonia in aqueous solutionFreeList 3 +25%

2815: Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium

LineDescriptionGeneralSection 301 (China)
2815.11.00Sodium hydroxide (Caustic soda): SolidFreeList 3 +25%
2815.12.00In aqueous solution (Soda lye or liquid soda)FreeList 3 +25%
2815.20.00Potassium hydroxide (Caustic potash)FreeList 3 +25%
2815.30.00Peroxides of sodium or potassium3.7%List 3 +25%

2816: Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium

LineDescriptionGeneralSection 301 (China)
2816.10.00Hydroxide and peroxide of magnesium3.1%List 3 +25%
2816.40.10Oxides, hydroxides and peroxides, of strontium or barium: Of strontium4.2%List 3 +25%
2816.40.20Oxides, hydroxides and peroxides, of strontium or barium: Of barium2%none

2817: Zinc oxide; zinc peroxide

LineDescriptionGeneralSection 301 (China)
2817.00.00Zinc oxide; zinc peroxideFreeList 3 +25%

2818: Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide

LineDescriptionGeneralSection 301 (China)
2818.10.10Artificial corundum, whether or not chemically defined: CrudeFreeList 4A +7.5%
2818.10.20In grains, or ground, pulverized or refined1.3%List 4A +7.5%
2818.20.00Aluminum oxide, other than artificial corundumFreenone
2818.30.00Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum…: Aluminum hy…FreeList 3 +25%

2819: Chromium oxides and hydroxides

LineDescriptionGeneralSection 301 (China)
2819.10.00Chromium oxides and hydroxides: Chromium trioxide3.7%List 3 +25%
2819.90.00Chromium oxides and hydroxides: Other3.7%List 3 +25%

2820: Manganese oxides

LineDescriptionGeneralSection 301 (China)
2820.10.00Manganese oxides: Manganese dioxide4.7%List 3 +25%
2820.90.00Manganese oxides: Other4.7%List 3 +25%

2821: Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3

LineDescriptionGeneralSection 301 (China)
2821.10.00Iron oxides and hydroxides; earth colors containing 70 percent or more by weight…: Iron oxides…3.7%List 3 +25%
2821.20.00Iron oxides and hydroxides; earth colors containing 70 percent or more by weight…: Earth colors5.5%List 3 +25%

2822: Cobalt oxides and hydroxides; commercial cobalt oxides

LineDescriptionGeneralSection 301 (China)
2822.00.00Cobalt oxides and hydroxides; commercial cobalt oxides0.1%List 3 +25%

2823: Titanium oxides

LineDescriptionGeneralSection 301 (China)
2823.00.00Titanium oxides5.5%List 3 +25%

2824: Lead oxides; red lead and orange lead

LineDescriptionGeneralSection 301 (China)
2824.10.00Lead monoxide (litharge, massicot)3%List 3 +25%
2824.90.10Lead suboxide (leady litharge)5.5%List 3 +25%
2824.90.20Other: Red lead and orange lead3.4%List 3 +25%
2824.90.50Other: Other4.8%List 3 +25%

2825: Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides

LineDescriptionGeneralSection 301 (China)
2825.10.00Hydrazine and hydroxylamine and their inorganic salts3.7%List 3 +25%
2825.20.00Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; ot…: Lithium oxi…3.7%List 3 +25%
2825.30.00Vanadium oxides and hydroxides5.5%List 3 +25%
2825.40.00Nickel oxides and hydroxidesFreeList 3 +25%
2825.50.10Copper oxides and hydroxides: Cupric oxide4.3%List 3 +25%
2825.50.20Copper oxides and hydroxides: Cuprous oxide5%List 3 +25%
2825.50.30Copper oxides and hydroxides: Copper hydroxides3.9%List 3 +25%
2825.60.00Germanium oxides and zirconium dioxide3.7%List 3 +25%
2825.70.00Molybdenum oxides and hydroxides3.2%none
2825.80.00Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; ot…: Antimony ox…Freenone
2825.90.10Beryllium oxide and hydroxide3.7%List 3 +25%
2825.90.15Other: Niobium oxide3.7%List 3 +25%
2825.90.20Other: Tin oxides4.2%none
2825.90.30Other: Tungsten oxides5.5%Four-year review +25%
2825.90.75Other: Cadmium oxideFreeList 3 +25%
2825.90.90Other: Other3.7%List 3 +25%

2826: Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts

LineDescriptionGeneralSection 301 (China)
2826.12.00Fluorides: Of aluminumFreeList 3 +25%
2826.19.10Other: Of ammonium3.1%List 3 +25%
2826.19.20Other: Of sodium3.7%List 3 +25%
2826.19.90Other: Other3.9%List 3 +25%
2826.30.00Sodium hexafluoroaluminate (Synthetic cryolite)FreeList 3 +25%
2826.90.10Fluorosilicates of sodium or of potassium4.1%List 3 +25%
2826.90.90Other: Other3.1%none

2827: Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides

LineDescriptionGeneralSection 301 (China)
2827.10.00Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides;…: Ammonium ch…2.9%List 3 +25%
2827.20.00Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides;…: Calcium chl…FreeList 3 +25%
2827.31.00Other chlorides: Of magnesium1.5%List 3 +25%
2827.32.00Other chlorides: Of aluminumFreeList 3 +25%
2827.35.00Other chlorides: Of nickel3.7%List 3 +25%
2827.39.10Other: Of vanadium5.5%List 4A +7.5%
2827.39.25Other: Of tin4.2%none
2827.39.30Other: Of titanium4.9%List 3 +25%
2827.39.40Other: Of tungsten5.5%none
2827.39.45Other: Of barium4.2%List 3 +25%
2827.39.55Other: Of iron3.7%List 3 +25%
2827.39.60Other: Of cobalt4.2%List 3 +25%
2827.39.65Other: Of zinc1.6%List 3 +25%
2827.39.90Other: Other3.7%List 3 +25%
2827.41.00Chloride oxides and chloride hydroxides: Of copper3.9%List 3 +25%
2827.49.10Other: Of vanadium5.5%List 3 +25%
2827.49.50Other: Other5.5%none
2827.51.00Bromides of sodium or of potassiumFreeList 3 +25%
2827.59.25Of ammonium, of calcium or of zincFreeList 3 +25%
2827.59.51Other: Other3.6%List 3 +25%
2827.60.10Iodides and iodide oxides: Of calcium or of copperFreeList 3 +25%
2827.60.20Iodides and iodide oxides: Of potassium2.8%List 3 +25%
2827.60.51Iodides and iodide oxides: Other4.2%List 3 +25%

2828: Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites

LineDescriptionGeneralSection 301 (China)
2828.10.00Commercial calcium hypochlorite and other calcium hypochlorites2.4%List 3 +25%
2828.90.00Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites: Other3.7%List 3 +25%

2829: Chlorates and perchlorates; bromates and perbromates; iodates and periodates

LineDescriptionGeneralSection 301 (China)
2829.11.00Chlorates: Of sodiumFreeList 3 +25%
2829.19.01Chlorates: Other3.3%List 3 +25%
2829.90.05Other: Potassium bromateFreeList 3 +25%
2829.90.25Other: Sodium bromateFreeList 4B (suspended, no extra duty)
2829.90.40Other: Of potassium3.1%List 3 +25%
2829.90.61Other: Other3.7%List 3 +25%

2830: Sulfides; polysulfides, whether or not chemically defined

LineDescriptionGeneralSection 301 (China)
2830.10.00Sulfides; polysulfides, whether or not chemically defined: Sodium sulfides3.7%List 3 +25%
2830.90.10Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weightFreeList 3 +25%
2830.90.15Other: Other zinc sulfide2.8%List 3 +25%
2830.90.20Other: Cadmium sulfide3.1%List 3 +25%
2830.90.90Other: Other3%List 3 +25%

2831: Dithionites and sulfoxylates

LineDescriptionGeneralSection 301 (China)
2831.10.10Sodium formaldehyde sulfoxylateFreeList 3 +25%
2831.10.50Of sodium: Other5.5%List 3 +25%
2831.90.00Dithionites and sulfoxylates: Other5.5%List 3 +25%

2832: Sulfites; thiosulfates

LineDescriptionGeneralSection 301 (China)
2832.10.00Sulfites; thiosulfates: Sodium sulfites1.5%List 3 +25%
2832.20.00Sulfites; thiosulfates: Other sulfites3.1%List 3 +25%
2832.30.10Thiosulfates: Sodium thiosulfate1.5%List 3 +25%
2832.30.50Thiosulfates: Other3.1%List 3 +25%

2833: Sulfates; alums; peroxosulfates (persulfates)

LineDescriptionGeneralSection 301 (China)
2833.11.10Disodium sulfate: Salt cakeFreeList 3 +25%
2833.11.50Disodium sulfate: Other0.4%List 3 +25%
2833.19.00Sodium sulfates: OtherFreeList 3 +25%
2833.21.00Other sulfates: Of magnesium3.7%List 3 +25%
2833.22.00Other sulfates: Of aluminumFreeList 3 +25%
2833.24.00Other sulfates: Of nickel3.2%List 3 +25%
2833.25.00Other sulfates: Of copper1.4%List 3 +25%
2833.27.00Other sulfates: Of barium0.6%List 3 +25%
2833.29.10Other: Of cobalt1.4%List 3 +25%
2833.29.20Other: Of ironFreeList 3 +25%
2833.29.30Other: Of vanadium5.5%List 3 +25%
2833.29.40Other: Of chromium3.7%List 3 +25%
2833.29.45Other: Of zinc1.6%List 3 +25%
2833.29.51Other: Other3.7%List 3 +25%
2833.30.00Sulfates; alums; peroxosulfates (persulfates): Alums1.6%List 3 +25%
2833.40.20Peroxosulfates (persulfates): Of sodium3.7%List 3 +25%
2833.40.60Peroxosulfates (persulfates): Other3.1%List 3 +25%

2834: Nitrites; nitrates

LineDescriptionGeneralSection 301 (China)
2834.10.10Nitrites: Of sodium5.5%List 3 +25%
2834.10.50Nitrites: Other3.1%List 3 +25%
2834.21.00Nitrates: Of potassiumFreeList 3 +25%
2834.29.05Other: Of bismuth5.5%List 3 +25%
2834.29.10Other: Of calciumFreeList 3 +25%
2834.29.20Other: Of strontium4.2%List 3 +25%
2834.29.51Other: Other3.5%List 3 +25%

2835: Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined

LineDescriptionGeneralSection 301 (China)
2835.10.00Phosphinates (hypophosphites) and phosphonates (phosphites)3.1%List 3 +25%
2835.22.00Phosphates: Of mono- or disodium1.4%List 3 +25%
2835.24.00Phosphates: Of potassium3.1%List 3 +25%
2835.25.00Calcium hydrogenorthophosphate ("Dicalcium phosphate")FreeList 3 +25%
2835.26.00Phosphates: Other phosphates of calciumFreeList 3 +25%
2835.29.10Other: Of aluminumFreeList 3 +25%
2835.29.20Other: Of triammonium1.5%List 3 +25%
2835.29.30Other: Of trisodium2.2%List 3 +25%
2835.29.51Other: Other4.1%List 3 +25%
2835.31.00Sodium triphosphate (Sodium tripolyphosphate)1.4%List 3 +25%
2835.39.10Other: Of potassium3.1%List 3 +25%
2835.39.50Other: Other3.7%List 3 +25%

2836: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate

LineDescriptionGeneralSection 301 (China)
2836.20.00Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate cont…: Disodium ca…1.2%List 3 +25%
2836.30.00Sodium hydrogencarbonate (Sodium bicarbonate)FreeList 3 +25%
2836.40.10Potassium carbonates: Dipotassium carbonate1.9%List 3 +25%
2836.40.20Potassium hydrogencarbonate (Potassium bicarbonate)1.3%List 3 +25%
2836.50.00Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate cont…: Calcium car…FreeList 3 +25%
2836.60.00Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate cont…: Barium carb…2.3%List 3 +25%
2836.91.00Other: Lithium carbonates3.7%List 3 +25%
2836.92.00Other: Strontium carbonate4.2%List 3 +25%
2836.99.10Other: Cobalt carbonates4.2%List 3 +25%
2836.99.20Other: Bismuth carbonate5.5%List 3 +25%
2836.99.30Commercial ammonium carbonate and other ammonium carbonates1.7%List 3 +25%
2836.99.40Other: Lead carbonates0.5%List 3 +25%
2836.99.50Other: Other3.7%List 3 +25%

2837: Cyanides, cyanide oxides and complex cyanides

LineDescriptionGeneralSection 301 (China)
2837.11.00Cyanides and cyanide oxides: Of sodiumFreeList 3 +25%
2837.19.01Cyanides and cyanide oxides: OtherFreeList 4A +7.5%
2837.20.10Complex cyanides: Potassium ferricyanide1.1%List 3 +25%
2837.20.51Complex cyanides: Other1.7%List 3 +25%

2839: Silicates; commercial alkali metal silicates

LineDescriptionGeneralSection 301 (China)
2839.11.00Of sodium: Sodium metasilicates1.1%List 3 +25%
2839.19.00Of sodium: Other1.1%List 3 +25%
2839.90.10Other: Of potassium3.1%List 3 +25%
2839.90.50Other: Other3.1%List 3 +25%

2840: Borates; peroxoborates (perborates)

LineDescriptionGeneralSection 301 (China)
2840.11.00Disodium tetraborate (refined borax): Anhydrous0.3%List 3 +25%
2840.19.00Disodium tetraborate (refined borax): Other0.1%List 3 +25%
2840.20.00Borates; peroxoborates (perborates): Other borates3.7%List 3 +25%
2840.30.00Borates; peroxoborates (perborates): Peroxoborates (perborates)3.7%List 3 +25%

2841: Salts of oxometallic or peroxometallic acids

LineDescriptionGeneralSection 301 (China)
2841.30.00Salts of oxometallic or peroxometallic acids: Sodium dichromate2.4%List 3 +25%
2841.50.10Other chromates and dichromates; peroxochromates: Potassium dichromate1.5%List 3 +25%
2841.50.91Other chromates and dichromates; peroxochromates: Other3.1%List 3 +25%
2841.61.00Manganites, manganates and permanganates: Potassium permanganate5%List 3 +25%
2841.69.00Manganites, manganates and permanganates: Other5%List 3 +25%
2841.70.10Molybdates: Of ammonium4.3%none
2841.70.50Molybdates: Other3.7%none
2841.80.00Salts of oxometallic or peroxometallic acids: Tungstates (wolframates)5.5%Four-year review +25%
2841.90.10Other: Vanadates5.5%List 3 +25%
2841.90.20Other: Ammonium perrhenate3.1%List 3 +25%
2841.90.30Other: Potassium stannate3.1%List 3 +25%
2841.90.40Other: Aluminates3.1%List 3 +25%
2841.90.45Chromates of zinc or of lead3.7%List 3 +25%
2841.90.50Other: Other3.7%List 3 +25%

2842: Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides

LineDescriptionGeneralSection 301 (China)
2842.10.00Double or complex silicates, including aluminosilicates whether or not chemically defined3.7%List 3 +25%
2842.90.10Fulminates, cyanates and thiocyanates3.1%List 3 +25%
2842.90.90Other: Other3.3%List 3 +25%

2843: Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals

LineDescriptionGeneralSection 301 (China)
2843.10.00Colloidal precious metals; inorganic or organic compounds of precious metals, wh…: Colloidal p…5.5%List 3 +25%
2843.21.00Silver compounds: Silver nitrate3.7%List 3 +25%
2843.29.01Silver compounds: Other3.7%List 3 +25%
2843.30.00Colloidal precious metals; inorganic or organic compounds of precious metals, wh…: Gold compou…5%List 3 +25%
2843.90.00Colloidal precious metals; inorganic or organic compounds of precious metals, wh…: Other compo…3.7%List 3 +25%

2844: Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds…

LineDescriptionGeneralSection 301 (China)
2844.10.10Natural uranium and its compounds; alloys, dispersions (including cermets), cera…: Uranium met…5%List 3 +25%
2844.10.20Natural uranium and its compounds; alloys, dispersions (including cermets), cera…: Uranium com…FreeList 3 +25%
2844.10.50Natural uranium and its compounds; alloys, dispersions (including cermets), cera…: Other5%List 3 +25%
2844.20.00Uranium enriched in U235 and its compounds; plutonium and its compounds; alloys, dispersions (…FreeList 4A +7.5%
2844.30.10Uranium depleted in U235 and its compounds; thorium and its compounds; alloys, d…: Thorium com…5.5%none
2844.30.20Uranium depleted in U235 and its compounds; thorium and its compounds; alloys, d…: Uranium com…Freenone
2844.30.50Uranium depleted in U235 and its compounds; thorium and its compounds; alloys, d…: Other5%none
2844.41.00Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtu…FreeFour-year review +25%
2844.42.00Actinium-225, actinium-227, californium-253, curium-240, curium-241, curium-242, curium-243, c…FreeFour-year review +25%
2844.43.00Radioactive elements and isotopes and compounds other than those of subheading 2…: Other radio…FreeFour-year review +25%
2844.44.00Radioactive elements and isotopes and compounds other than those of subheading 2…: Radioactive…FreeFour-year review +25%
2844.50.00Spent (irradiated) fuel elements (cartridges) of nuclear reactorsFreeList 4A +7.5%

2845: Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined

LineDescriptionGeneralSection 301 (China)
2845.10.00Heavy water (Deuterium oxide)FreeList 3 +25%
2845.20.00Boron enriched in boron-10 and its compoundsFreeList 1 +25%
2845.30.00Lithium enriched in lithium-6 and its compoundsFreeList 1 +25%
2845.40.00Isotopes other than those of heading 2844; compounds, inorganic or organic, of s…: Helium-3FreeList 1 +25%
2845.90.01Isotopes other than those of heading 2844; compounds, inorganic or organic, of s…: OtherFreeList 1 +25%

2846: Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals

LineDescriptionGeneralSection 301 (China)
2846.10.00Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium…: Cerium comp…5.5%none
2846.90.20Mixtures of rare-earth oxides or of rare-earth chloridesFreenone
2846.90.40Yttrium bearing materials and compounds containing by weight more than 19 percent but less tha…Freenone
2846.90.80Other: Other3.7%none

2847: Hydrogen peroxide, whether or not solidified with urea

LineDescriptionGeneralSection 301 (China)
2847.00.00Hydrogen peroxide, whether or not solidified with urea3.7%List 3 +25%

2849: Carbides, whether or not chemically defined

LineDescriptionGeneralSection 301 (China)
2849.10.00Carbides, whether or not chemically defined: Of calcium1.8%List 3 +25%
2849.20.10Of silicon: CrudeFreenone
2849.20.20In grains, or ground, pulverized or refined0.5%none
2849.90.10Other: Of boron3.7%List 3 +25%
2849.90.20Other: Of chromium4.2%List 3 +25%
2849.90.30Other: Of tungsten5.5%Four-year review +25%
2849.90.50Other: Other3.7%List 3 +25%

2850: Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of headin…

LineDescriptionGeneralSection 301 (China)
2850.00.05Hydrides, nitrides, azides, silicides and borides, whether or not chemically def…: Of calciumFreeList 3 +25%
2850.00.07Hydrides, nitrides, azides, silicides and borides, whether or not chemically def…: Of titanium4.9%List 3 +25%
2850.00.10Hydrides, nitrides, azides, silicides and borides, whether or not chemically def…: Of tungsten5.5%List 3 +25%
2850.00.20Hydrides, nitrides, azides, silicides and borides, whether or not chemically def…: Of vanadium5.5%List 3 +25%
2850.00.50Hydrides, nitrides, azides, silicides and borides, whether or not chemically def…: Other3.7%List 3 +25%

2852: Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams

LineDescriptionGeneralSection 301 (China)
2852.10.10Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanideFreeList 3 +25%
2852.10.90Chemically defined: Other3%List 3 +25%
2852.90.05Albuminates, tannates and phosphides of mercuryFreeList 3 +25%
2852.90.90Other: Other3%List 3 +25%

2853: Phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or conductivity wa…

LineDescriptionGeneralSection 301 (China)
2853.10.00Cyanogen chloride (chloorcyan)2.8%List 3 +25%
2853.90.10Of copper (phosphor copper), containing more than 15 percent by weight of phosphorous2.6%List 3 +25%
2853.90.50Of other metals or nonmetalsFreeList 3 +25%
2853.90.90Other: Other2.8%List 3 +25%