I. CHEMICAL ELEMENTS

Fluorine, chlorine, bromine and iodine:

Chlorine

Iodine

Fluorine; bromine:

Fluorine

Bromine

Sulfur, sublimed or precipitated; colloidal sulfur

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

Carbon black

Other

Hydrogen, rare gases and other nonmetals:

Hydrogen

Rare gases:

Argon

Other

Helium

Other

Nitrogen

Oxygen

Boron; tellurium

Boron

Tellurium

Silicon:

Containing by weight not less than 99.99 percent of silicon

Other:

Containing by weight less than 99.99 percent but not less than 99 percent of silicon

Other

Phosphorus

Arsenic

Selenium

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

Alkali or alkaline-earth metals:

Sodium ^[5]

Calcium

Other:

Strontium

Barium

Other

Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed

Not intermixed or interalloyed:

Lanthanum

Cerium

Praseodymium

Neodymium

Other

Other

Mercury

II. INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NONMETALS

Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid:

Hydrogen chloride (Hydrochloric acid)

Chlorosulfuric acid

Sulfuric acid; oleum

Nitric acid; sulfonitric acids

Nitric acid

Sulfonitric acids

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

Diphosphorus pentaoxide

Phosphoric acid and polyphosphoric acids

Phosphoric acid:

Fertilizer grade:

Containing less than 65 percent available diphosphorus pentaoxide (P₂O₅) equivalents

Other

Other

Polyphosphoric acids

Oxides of boron; boric acids

Other inorganic acids and other inorganic oxygen compounds of nonmetals:

Other inorganic acids:

Hydrogen fluoride (Hydrofluoric acid)

Hydrogen cyanide (hydrocyanic acid)

Other:

Arsenic acid

Hydrobromic acid

Other

Sulfamic acid

Other

Other inorganic oxygen compounds of nonmetals:

Carbon dioxide

Silicon dioxide:

Synthetic silica gel

Other

Other:

Arsenic trioxide

Selenium dioxide

Sulfur dioxide

Other

III. HALOGEN OR SULFUR COMPOUNDS OF NONMETALS

Halides and halide oxides of nonmetals:

Chlorides and chloride oxides:

Carbonyl dichloride (phosgene)

Phosphorous oxychloride

Phosphorous trichloride

Phosphorous pentachloride

Sulfur monochloride

Sulfur dichloride

Thionyl chloride

Other

Arsenic trichloride

Other

Other

Sulfur hexafluoride

Other

Sulfides of nonmetals; commercial phosphorus trisulfide:

Carbon disulfide

Other:

Of arsenic

Of phosphorus

Other

IV. INORGANIC BASES AND OXIDES, HYDROXIDES AND PEROXIDES OF METALS

Ammonia, anhydrous or in aqueous solution:

Anhydrous ammonia

Ammonia in aqueous solution

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

Sodium hydroxide (Caustic soda):

Solid

In aqueous solution (Soda lye or liquid soda)

Potassium hydroxide (Caustic potash)

In solid form

Other

Peroxides of sodium or potassium

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

Hydroxide and peroxide of magnesium

Oxides, hydroxides and peroxides, of strontium or barium:

Of strontium

Of barium

Zinc oxide; zinc peroxide

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

Artificial corundum, whether or not chemically defined:

Crude

In grains, or ground, pulverized or refined

White, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide

Other

Aluminum oxide, other than artificial corundum

Aluminum hydroxide

Chromium oxides and hydroxides:

Chromium trioxide

Other

Manganese oxides:

Manganese dioxide

Other

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

Iron oxides and hydroxides

Synthetic pigments:

Black

Red

Yellow

Other

Other

Earth colors

Cobalt oxides and hydroxides; commercial cobalt oxides

Titanium oxides

Lead oxides; red lead and orange lead:

Lead monoxide (litharge, massicot)

Other:

Lead suboxide (leady litharge)

Red lead and orange lead

Other

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

Hydrazine and hydroxylamine and their inorganic salts

Lithium oxide and hydroxide

Vanadium oxides and hydroxides

Vanadium pentoxide (anhydride)

Other

Nickel oxides and hydroxides

Copper oxides and hydroxides:

Cupric oxide

Cuprous oxide

Copper hydroxides

Germanium oxides and zirconium dioxide

Molybdenum oxides and hydroxides

Antimony oxides

Other:

Beryllium oxide and hydroxide

Niobium oxide

Tin oxides

Tungsten oxides

Cadmium oxide

Other

V. SALTS AND PEROXYSALTS, OF INORGANIC ACIDS AND METALS

Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts:

Fluorides:

Of aluminum

Other:

Of ammonium

Of sodium

Other

Sodium hexafluoroaluminate (Synthetic cryolite)

Other:

Fluorosilicates of sodium or of potassium

Other

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

Ammonium chloride

Calcium chloride

Other chlorides:

Of magnesium

Of aluminum

Of nickel

Other:

Of vanadium

Of tin

Of titanium

Of tungsten

Of barium

Of iron

Of cobalt

Of zinc

Other

Chloride oxides and chloride hydroxides:

Of copper

Other:

Of vanadium

Other

Bromides and bromide oxides:

Bromides of sodium or of potassium

Other:

Of ammonium, of calcium or of zinc

Other

Iodides and iodide oxides:

Of calcium or of copper

Of potassium

Other

Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites:

Commercial calcium hypochlorite and other calcium hypochlorites

Other

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

Chlorates:

Of sodium

Other

Other:

Potassium bromate

Sodium bromate

Other:

Of potassium

Other

Sulfides; polysulfides, whether or not chemically defined:

Sodium sulfides

Other:

Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight

Other zinc sulfide

Cadmium sulfide

Other

Dithionites and sulfoxylates:

Of sodium:

Sodium formaldehyde sulfoxylate

Other

Other

Sulfites; thiosulfates:

Sodium sulfites

Other sulfites

Thiosulfates:

Sodium thiosulfate

Other

Sulfates; alums; peroxosulfates (persulfates):

Sodium sulfates:

Disodium sulfate:

Salt cake

Other

Anhydrous

Other

Other

Other sulfates:

Of magnesium

Of aluminum

Of nickel

Of copper

Of barium

Other:

Of cobalt

Of iron

Of vanadium

Of chromium

Of zinc

Other

Alums

Peroxosulfates (persulfates):

Of sodium

Other

Of potassium

Of ammonium

Other

Nitrites; nitrates:

Nitrites:

Of sodium

Other

Nitrates:

Of potassium

Other:

Of bismuth

Of calcium

Of strontium

Other

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

Phosphinates (hypophosphites) and phosphonates (phosphites)

Phosphates:

Of mono- or disodium

Of potassium

Calcium hydrogenorthophosphate ("Dicalcium phosphate")

Other phosphates of calcium

Other:

Of aluminum

Of triammonium

Of trisodium

Other

Polyphosphates:

Sodium triphosphate (Sodium tripolyphosphate)

Other:

Of potassium

Other

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

Disodium carbonate

Sodium hydrogencarbonate (Sodium bicarbonate)

Potassium carbonates:

Dipotassium carbonate

Potassium hydrogencarbonate (Potassium bicarbonate)

Calcium carbonate

Barium carbonate

Other:

Lithium carbonates

U.S.P. grade

Other

Strontium carbonate

Other:

Cobalt carbonates

Bismuth carbonate

Commercial ammonium carbonate and other ammonium carbonates

Lead carbonates

Other

Cyanides, cyanide oxides and complex cyanides:

Cyanides and cyanide oxides:

Of sodium

Other

Potassium cyanide

Calcium cyanide

Other

Complex cyanides:

Potassium ferricyanide

Other

Silicates; commercial alkali metal silicates:

Of sodium:

Sodium metasilicates

Other

Other:

Of potassium

Other

Borates; peroxoborates (perborates):

Disodium tetraborate (refined borax):

Anhydrous

Other

Other borates

Peroxoborates (perborates)

Sodium perborate

Other

Salts of oxometallic or peroxometallic acids:

Sodium dichromate

Other chromates and dichromates; peroxochromates:

Potassium dichromate

Other

Manganites, manganates and permanganates:

Potassium permanganate

Other

Sodium permanganate

Other

Molybdates:

Of ammonium

Other

Tungstates (wolframates)

Of ammonium

Of calcium

Other

Other:

Vanadates

Ammonium perrhenate

Potassium stannate

Aluminates

Chromates of zinc or of lead

Other

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

Double or complex silicates, including aluminosilicates whether or not chemically defined

Other:

Fulminates, cyanates and thiocyanates

Other

VI. MISCELLANEOUS

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

Colloidal precious metals

Silver compounds:

Silver nitrate

Other

Gold compounds

Other compounds; amalgams

Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products:

Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds:

Uranium metal

Uranium compounds

Oxide

Hexafluoride

Other

Other

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

Uranium compounds:

Oxide

Fluorides

Other

Other

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:

Thorium compounds

Uranium compounds

Oxide

Fluorides

Other

Other

Uranium metal

Other

Radioactive 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:

Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds

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 compounds

Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds

Elements, isotopes and compounds with cobalt-60 radioactivity only

Other elements, isotopes and compounds:

Americium-241, californium-252, cesium-137, gadolinium-153, idium-192, promethium-147, radium-226, selenium-75, or ytterbium-169

Other

Other

Radioactive residues

Spent (irradiated) fuel elements (cartridges) of nuclear reactors

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

Heavy water (Deuterium oxide)

Boron enriched in boron-10 and its compounds

Lithium enriched in lithium-6 and its compounds

Helium-3

Other

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

Cerium compounds

Cerium oxides

Other

Other:

Mixtures of rare-earth oxides or of rare-earth chlorides

Rare-earth oxides except cerium oxides:

Containing lanthanum as the predominant metal

Containing yttrium or scandium as the predominant metal

Other

Rare-earth chlorides except cerium chlorides:

Containing yttrium or scandium as the predominant metal

Other

Other:

Yttrium bearing materials and compounds containing by weight more than 19 percent but less than 85 percent yttrium oxide equivalent

Other

Mixtures of rare-earth carbonates other than of cerium carbonate:

Containing lanthanum as the predominant metal

Other

Other

Hydrogen peroxide, whether or not solidified with urea

Carbides, whether or not chemically defined:

Of calcium

Of silicon:

Crude

In grains, or ground, pulverized or refined

Other:

Of boron

Of chromium

Of tungsten

Other

Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849:

Of calcium

Of titanium

Of tungsten

Of vanadium

Other

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

Chemically defined:

Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanide

Other

Other:

Albuminates, tannates and phosphides of mercury

Other

Phosphides, whether or not chemically defined, excluding ferrophosphorous; 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:

Cyanogen chloride (chloorcyan)

Other:

Phosphides, whether or not chemically defined, excluding ferrophosphorous:

Of copper (phosphor copper), containing more than 15 percent by weight of phosphorous

Of other metals or nonmetals

Other

Gallium arsenide wafers, undoped

Other