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U.S. Harmonized Tariff Schedule

HS Code 28

Inorganic chemicals; organic or inorgani c compounds of precious metals, of rare-earth metals,of radioactive elements or of isotopes

CHAPTER 28
inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals,
of radioactive elements or of isotopes
VI
28-1
Notes
  • 1. Except where the context otherwise requires, the headings of this chapter apply only to:
    • (a) Separate chemical elements and separate chemically defined compounds, whether or not containing impurities;
    • (b) The products mentioned in (a) above dissolved in water;
    • (c) The products mentioned in (a) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and that the solvent does not render the product particularly suitable for specific use rather than for general use;
    • (d) The products mentioned in (a), (b) or (c) above with an added stabilizer (including an anticaking agent) necessary for their preservation or transport;
    • (e) The products mentioned in (a), (b), (c) or (d) above with an added antidusting agent or a coloring substance added to facilitate their identification or for safety reasons, provided that the additions do not render the product particularly suitable for specific use rather than for general use.
  • 2. In addition to dithionites and sulfoxylates, stabilized with organic substances (heading 2831), carbonates and peroxocarbonates of inorganic bases (heading 2836), cyanides, cyanide oxides and complex cyanides of inorganic bases (heading 2837), fulminates, cyanates and thiocyanates, of inorganic bases (heading 2842), organic products included in headings 2843 to 2846 and 2852 and carbides (heading 2849), only the following compounds of carbon are to be classified in this chapter:
    • (a) Oxides of carbon, hydrogen cyanide and fulminic, isocyanic, thiocyanic and other simple or complex cyanogen acids (heading 2811);
    • (b) Halide oxides of carbon (heading 2812);
    • (c) Carbon disulfide (heading 2813);
    • (d) Thiocarbonates, selenocarbonates, tellurocarbonates, selenocyanates, tellurocyanates, tetrathiocyanatodiamminochromates (reineckates) and other complex cyanates, of inorganic bases (heading 2842);
    • (e) Hydrogen peroxide, solidified with urea (heading 2847), carbon oxysulfide, thiocarbonyl halides, cyanogen, cyanogen halides and cyanamide and its metal derivatives (heading 2853) other than calcium cyanamide, whether or not pure (chapter 31).
  • 3. Subject to the provisions of note 1 to section VI, this chapter does not cover:
    • (a) Sodium chloride or magnesium oxide, whether or not pure, or other products of section V;
    • (b) Organo-inorganic compounds other than those mentioned in note 2 above;
    • (c) Products mentioned in note 2, 3, 4 or 5 to chapter 31;
    • (d) Inorganic products of a kind used as luminophores, of heading 3206; glass frit and other glass in the form of powder, granules or flakes, of heading 3207;
    • (e) Artificial graphite (heading 3801); products put up as charges for fire-extinguishers or put up in fire-extinguishing grenades, of heading 3813; ink removers put up in packings for retail sale, of heading 3824; cultured crystals (other than optical elements) weighing not less than 2.5 g each, of the halides of the alkali or alkaline-earth metals, of heading 3824;
    • (f) Precious or semiprecious stones (natural, synthetic or reconstructed) or dust or powder of such stones (headings 7102 to 7105), or precious metals or precious metal alloys of chapter 71;
    • (g) The metals, whether or not pure, metal alloys or cermets, including sintered metal carbides (metal carbides sintered with a metal), of section XV; or
    • (h) Optical elements, for example, of the halides of the alkali or alkaline-earth metals (heading 9001).
  • 4. Chemically defined complex acids consisting of a nonmetal acid of subchapter II and a metal acid of subchapter IV are to be classified in heading 2811.
  • 5. Headings 2826 to 2842 apply only to metal or ammonium salts or peroxysalts.
    Except where the context otherwise requires, double or complex salts are to be classified in heading 2842.
  • 6. Heading 2844 applies only to:
    • (a) Technetium (atomic No. 43), promethium (atomic No. 61), polonium (atomic No. 84) and all elements with an atomic number greater than 84;
    • (b) Natural or artificial radioactive isotopes (including those of the precious metals or of the base metals of sections XIV and XV), whether or not mixed together;
    • (c) Compounds, inorganic or organic, of these elements or isotopes, whether or not chemically defined, whether or not mixed together;
    • (d) Alloys, dispersions (including cermets), ceramic products and mixtures containing these elements or isotopes or inorganic or organic compounds thereof and having a specific radioactivity exceeding 74 becquerels per gram (0.002 microcurie per gram);
    • (e) Spent (irradiated) fuel elements (cartridges) of nuclear reactors;
    • (f) Radioactive residues whether or not usable.
      The term "isotopes", for the purposes of this note and of the wording of headings 2844 and 2845, refers to:
      • (i) Individual nuclides, excluding, however, those existing in nature in the monoiosotopic state;
      • (ii) Mixtures of isotopes of one and the same element, enriched in one or several of the said isotopes, that is, elements of which the natural isotopic composition has been artificially modified.
  • 7. Heading 2853 includes copper phosphide (phosphor copper) containing more than 15 percent by weight of phosphorus.
  • 8. Chemical elements (for example, silicon and selenium) doped for use in electronics are to be classified in this chapter, provided that they are in forms unworked as drawn, or in the form of cylinders or rods. When cut in the form of discs, wafers or similar forms, they fall in heading 3818.
Subheading Note
  • 1. For the purposes of subheading 2852.10, the expression "chemically defined" means all organic or inorganic compounds of mercury meeting the requirements of paragraphs (a) to (e) of Note 1 to Chapter 28 or paragraphs (a) to (h) of Note 1 to Chapter 29.
Statistical Note
  • 1. For the purposes of heading 2804, the term "m3" (cubic meter) means a standard cubic meter measured at 21°C at 760 mm (1013 millibars) pressure.

U.S. Tariff Rates

U.S. tariff rates for HS Code 28: Inorganic chemicals; organic or inorgani c compounds of precious metals, of rare-earth metals,of radioactive elements or of isotopes
Heading / SubheadingArticle DescriptionUnit of QuantityGeneralSpecial
2801Fluorine, chlorine, bromine and iodine
2801.10.00.00ChlorinekgFree
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2801.20.00.00IodinekgFree
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2801.30Fluorine; bromine
2801.30.10.00Fluorinekg3.7%Free (,S,)
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2801.30.20.00Brominekg5.5%Free (, S, )
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2802.00.00.00Sulfur, sublimed or precipitated; colloidal sulfurtFree
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2803.00.00Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)Free
2803.00.00.10Carbon blackkg
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2803.00.00.50Otherkg
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2804Hydrogen, rare gases and other nonmetals
2804.10.00.00Hydrogenthousand m<sup>3</sup>3.7%Free (,S,)
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Rare gases
2804.21.00.00Argonthousand m<sup>3</sup>3.7%Free (,S,)
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2804.29.00Other3.7%Free (,S,)
2804.29.00.10Heliumthousand m<sup>3</sup>
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2804.29.00.20Neonthousand m<sup>3</sup>
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2804.29.00.30Isotopically pure rare gases having a purity of 99 percent or more by volumethousand m<sup>3</sup>
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2804.29.00.55Otherthousand m<sup>3</sup>
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2804.30.00.00Nitrogenthousand m<sup>3</sup>3.7%Free (,S,)
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2804.40.00.00Oxygenthousand m<sup>3</sup>3.7%Free (,S,)
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2804.50.00Boron; telluriumFree
2804.50.00.10Boronkg
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2804.50.00.20Telluriumkg
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Silicon
2804.61.00.00Containing by weight not less than 99.99 percent of siliconkgFree
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2804.69Other
2804.69.10.00Containing by weight less than 99.99 percent but not less than 99 percent of siliconkg, Si kg5.3%Free (*,S,)
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2804.69.50.00Otherkg, Si kg5.5%Free (, S,)
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2804.70.00.00PhosphoruskgFree
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2804.80.00.00ArsenickgFree
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2804.90.00.00SeleniumkgFree
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2805Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury
Alkali or alkaline-earth metals
2805.11.00.00Sodiumkg5.3%Free (, S,)
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2805.12.00.00Calciumkg3%Free (, S,)
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2805.19Other
2805.19.10.00Strontiumkg3.7%Free (,S,)
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2805.19.20.00BariumkgFree
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2805.19.90Other5.5%Free (, S,)
2805.19.90.10Lithiumkg
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2805.19.90.90Otherkg
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2805.30.00Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed5%Free (, S,)
Not intermixed or interalloyed
2805.30.00.05Lanthanumkg
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2805.30.00.10Ceriumkg
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2805.30.00.15Praseodymiumkg
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2805.30.00.20Neodymiumkg
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2805.30.00.50Otherkg
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2805.30.00.90Otherkg
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2805.40.00.00Mercurykg1.7%Free (*,S,)
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II. INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NONMETALS
2806Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid
2806.10.00.00Hydrogen chloride (Hydrochloric acid)tFree
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2806.20.00.00Chlorosulfuric acidkg4.2%Free (,S,)
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2807.00.00.00Sulfuric acid; oleumtFree
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2808.00.00Nitric acid; sulfonitric acidsFree
2808.00.00.10Nitric acidkg
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2808.00.00.20Sulfonitric acidskg
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2809Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined
2809.10.00.00Diphosphorus pentaoxidekgFree
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2809.20.00Phosphoric acid and polyphosphoric acidsFree
Phosphoric acid
Fertilizer grade
2809.20.00.10Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalentst
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2809.20.00.20Othert
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2809.20.00.30Othert
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2809.20.00.40Polyphosphoric acidst
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2810.00.00.00Oxides of boron; boric acidst1.5%Free (,S,)
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2811Other inorganic acids and other inorganic oxygen compounds of nonmetals
Other inorganic acids
2811.11.00.00Hydrogen fluoride (Hydrofluoric acid)kgFree
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2811.12.00.00Hydrogen cyanide (hydrocyanic acid)kg4.2%Free (,S,)
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2811.19Other
2811.19.10.00Arsenic acidkg2.3%Free (,S,)
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2811.19.30.00Hydrobromic acidkgFree
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2811.19.61Other4.2%Free (,S,)
2811.19.61.10Sulfamic acidkg
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2811.19.61.90Otherkg
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Other inorganic oxygen compounds of nonmetals
2811.21.00.00Carbon dioxidet3.7%Free (,S,)
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2811.22Silicon dioxide
2811.22.10.00Synthetic silica gelkg3.7%Free (*,S,)
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2811.22.50.00OtherkgFree
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2811.29Other
2811.29.10.00Arsenic trioxidekgFree
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2811.29.20.00Selenium dioxidekgFree
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2811.29.30.00Sulfur dioxidekg4.2%Free (,S,)
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2811.29.50.00Otherkg3.7%Free (,S,)
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III. HALOGEN OR SULFUR COMPOUNDS OF NONMETALS
2812Halides and halide oxides of nonmetals
Chlorides and chloride oxides
2812.11.00.00Carbonyl dichloride (phosgene)kg3.7%Free (,S,)
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2812.12.00.00Phosphorous oxychloridekg3.7%Free (,S,)
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2812.13.00.00Phosphorous trichloridekg3.7%Free (,S,)
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2812.14.00.00Phosphorous pentachloridekgFree
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2812.15.00.00Sulfur monochloridekg3.7%Free (,S,)
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2812.16.00.00Sulfur dichloridekg3.7%Free (,S,)
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2812.17.00.00Thionyl chloridekg3.7%Free (,S,)
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2812.19.00Other3.7%Free (,S,)
2812.19.00.10Arsenic trichloridekg
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2812.19.00.90Otherkg
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2812.90.00Other3.7%Free (,S,)
2812.90.00.10Sulfur hexafluoridekg
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2812.90.00.90Otherkg
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2813Sulfides of nonmetals; commercial phosphorus trisulfide
2813.10.00.00Carbon disulfidekg3.7%Free (,S,)
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2813.90Other
2813.90.10.00Of arsenickgFree
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2813.90.20.00Of phosphoruskgFree
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2813.90.50.00Otherkg3.7%Free (*,S,)
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IV. INORGANIC BASES AND OXIDES, HYDROXIDES AND PEROXIDES OF METALS
2814Ammonia, anhydrous or in aqueous solution
2814.10.00.00Anhydrous ammoniatFree
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2814.20.00.00Ammonia in aqueous solutiont, NH<sub>3</sub> tFree
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2815Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium
Sodium hydroxide (Caustic soda)
2815.11.00.00SolidkgFree
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2815.12.00.00In aqueous solution (Soda lye or liquid soda)kg, NaOH kgFree
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2815.20.00Potassium hydroxide (Caustic potash)Free
2815.20.00.50In solid formkg
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2815.20.00.90Otherkg
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2815.30.00.00Peroxides of sodium or potassiumkg3.7%Free (,S,)
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2816Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium
2816.10.00.00Hydroxide and peroxide of magnesiumkg3.1%Free (,S,)
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2816.40Oxides, hydroxides and peroxides, of strontium or barium
2816.40.10.00Of strontiumkg4.2%Free (,S,)
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2816.40.20.00Of bariumkg2%Free (,S,)
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2817.00.00.00Zinc oxide; zinc peroxidekgFree
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2818Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide
2818.10Artificial corundum, whether or not chemically defined
2818.10.10.00CrudetFree
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2818.10.20In grains, or ground, pulverized or refined1.3%Free (,S,)
2818.10.20.10White, pink or ruby, containing more than 97.5 percent by weight of aluminum oxidekg
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2818.10.20.90Otherkg
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2818.20.00.00Aluminum oxide, other than artificial corundumkgFree
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2818.30.00.00Aluminum hydroxidekgFree
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2819Chromium oxides and hydroxides
2819.10.00.00Chromium trioxidekg3.7%Free (,S,)
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2819.90.00.00Otherkg3.7%Free (,S,)
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2820Manganese oxides
2820.10.00.00Manganese dioxidekg4.7%Free (,S,)
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2820.90.00.00Otherkg4.7%Free (,S,)
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2821Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3
2821.10.00Iron oxides and hydroxides3.7%Free (,S,)
Synthetic pigments
2821.10.00.10Blackkg
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2821.10.00.20Redkg
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2821.10.00.30Yellowkg
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2821.10.00.40Otherkg
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2821.10.00.50Otherkg
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2821.20.00.00Earth colorskg5.5%Free (,S,)
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2822.00.00Cobalt oxides and hydroxides; commercial cobalt oxides0.1%Free (*,S,)
2822.00.00.10Cobalt(II, III) oxide (cobalt tetroxide)kg
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2822.00.00.90Otherkg
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2823.00.00.00Titanium oxideskg5.5%Free (,S,)
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2824Lead oxides; red lead and orange lead
2824.10.00.00Lead monoxide (litharge, massicot)kg3%Free (,S,)
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2824.90Other
2824.90.10.00Lead suboxide (leady litharge)kg5.5%Free (,S,)
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2824.90.20.00Red lead and orange leadkg3.4%Free (,S,)
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2824.90.50.00Otherkg4.8%Free (,S,)
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2825Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides
2825.10.00.00Hydrazine and hydroxylamine and their inorganic saltskg3.7%Free (,S,)
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2825.20.00.00Lithium oxide and hydroxidekg3.7%Free (,S,)
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2825.30.00Vanadium oxides and hydroxides5.5%Free (,S,)
2825.30.00.10Vanadium pentoxide (anhydride)kg, V kg
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2825.30.00.50Otherkg, V kg
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2825.40.00.00Nickel oxides and hydroxideskgFree
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2825.50Copper oxides and hydroxides
2825.50.10.00Cupric oxidekg4.3%Free (,S,)
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2825.50.20.00Cuprous oxidekg5%Free (,S,)
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2825.50.30.00Copper hydroxideskg3.9%Free (,S,)
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2825.60.00Germanium oxides and zirconium dioxide3.7%Free (,S,)
2825.60.00.10Germanium dioxidekg
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2825.60.00.20Zirconium dioxidekg
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2825.60.00.50Otherkg
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2825.70.00.00Molybdenum oxides and hydroxideskg3.2%Free (,S,)
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2825.80.00.00Antimony oxideskgFree
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2825.90Other
2825.90.10.00Beryllium oxide and hydroxidekg3.7%Free (*,S,)
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2825.90.15.00Niobium oxidekg3.7%Free (*,S,)
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2825.90.20.00Tin oxideskg4.2%Free (*,S,)
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2825.90.30.00Tungsten oxideskg, W kg5.5%Free (, S,)
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2825.90.75.00Cadmium oxidekgFree
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2825.90.90.00Otherkg3.7%Free (*,S,)
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V. SALTS AND PEROXYSALTS, OF INORGANIC ACIDS AND METALS
2826Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts
Fluorides
2826.12.00.00Of aluminumkgFree
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2826.19Other
2826.19.10.00Of ammoniumkg3.1%Free (,S,)
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2826.19.20.00Of sodiumkg3.7%Free (,S,)
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2826.19.90.00Otherkg3.9%Free (,S,)
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2826.30.00.00Sodium hexafluoroaluminate (Synthetic cryolite)tFree
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2826.90Other
2826.90.10.00Fluorosilicates of sodium or of potassiumkg4.1%Free (*,S,)
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2826.90.90Other3.1%Free (*,S,)
2826.90.90.10Lithium hexafluorophosphatekg
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2826.90.90.90Otherkg
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2827Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides
2827.10.00.00Ammonium chloridekg2.9%Free (,S,)
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2827.20.00.00Calcium chloridekgFree
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Other chlorides
2827.31.00.00Of magnesiumkg1.5%Free (,S,)
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2827.32.00.00Of aluminumkgFree
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2827.35.00.00Of nickelkg3.7%Free (,S,)
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2827.39Other
2827.39.10.00Of vanadiumkg, V kg5.5%Free (,S,)
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2827.39.25.00Of tinkg4.2%Free (,S,)
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2827.39.30.00Of titaniumkg4.9%Free (,S,)
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2827.39.40.00Of tungstenkg, W kg5.5%Free (, S,)
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2827.39.45.00Of bariumkg4.2%Free (,S,)
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2827.39.55.00Of ironkg3.7%Free (,S,)
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2827.39.60.00Of cobaltkg4.2%Free (,S,)
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2827.39.65.00Of zinckg1.6%Free (,S,)
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2827.39.90Other3.7%Free (,S,)
2827.39.90.10Of lithiumkg
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2827.39.90.50Otherkg
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Chloride oxides and chloride hydroxides
2827.41.00.00Of copperkg3.9%Free (,S,)
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2827.49Other
2827.49.10.00Of vanadiumkg, V kg5.5%Free (,S,)
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2827.49.50.00Otherkg5.5%Free (,S,)
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Bromides and bromide oxides
2827.51.00.00Bromides of sodium or of potassiumkgFree
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2827.59Other
2827.59.25.00Of ammonium, of calcium or of zinckgFree
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2827.59.51.00Otherkg3.6%Free (,S,)
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2827.60Iodides and iodide oxides
2827.60.10.00Of calcium or of copperkgFree
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2827.60.20.00Of potassiumkg2.8%Free (,S,)
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2827.60.51.00Otherkg4.2%Free (,S,)
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2828Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites
2828.10.00.00Commercial calcium hypochlorite and other calcium hypochloriteskg2.4%Free (,S,)
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2828.90.00.00Otherkg3.7%Free (,S,)
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2829Chlorates and perchlorates; bromates and perbromates; iodates and periodates
Chlorates
2829.11.00.00Of sodiumkgFree
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2829.19.01.00Otherkg3.3%Free (,S,)
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2829.90Other
2829.90.05.00Potassium bromatekgFree
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2829.90.25.00Sodium bromatekgFree
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Other
2829.90.40.00Of potassiumkg3.1%Free (,S,)
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2829.90.61.00Otherkg3.7%Free (,S,)
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2830Sulfides; polysulfides, whether or not chemically defined
2830.10.00.00Sodium sulfideskg3.7%Free (,S,)
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2830.90Other
2830.90.10.00Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weightkgFree
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2830.90.15.00Other zinc sulfidekg2.8%Free (,S,)
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2830.90.20.00Cadmium sulfidekg3.1%Free (,S,)
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2830.90.90.00Otherkg3%Free (,S,)
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2831Dithionites and sulfoxylates
2831.10Of sodium
2831.10.10.00Sodium formaldehyde sulfoxylatekgFree
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2831.10.50.00Otherkg5.5%Free (,S,)
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2831.90.00.00Otherkg5.5%Free (,S,)
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2832Sulfites; thiosulfates
2832.10.00.00Sodium sulfiteskg1.5%Free (,S,)
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2832.20.00.00Other sulfiteskg3.1%Free (*,S,)
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2832.30Thiosulfates
2832.30.10.00Sodium thiosulfatekg1.5%Free (*,S,)
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2832.30.50.00Otherkg3.1%Free (,S,)
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2833Sulfates; alums; peroxosulfates (persulfates)
Sodium sulfates
2833.11Disodium sulfate
2833.11.10.00Salt caketFree
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2833.11.50Other0.4%Free (,S,)
2833.11.50.10Anhydroust
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2833.11.50.50Othert
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2833.19.00.00OtherkgFree
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Other sulfates
2833.21.00.00Of magnesiumkg3.7%Free (,S,)
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2833.22.00.00Of aluminumkgFree
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2833.24.00.00Of nickelkg3.2%Free (,S,)
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2833.25.00.00Of copperkg, Cu kg1.4%Free (,S,)
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2833.27.00.00Of bariumkg0.6%Free (,S,)
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2833.29Other
2833.29.10.00Of cobaltkg1.4%Free (,S,)
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2833.29.20.00Of ironkgFree
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2833.29.30.00Of vanadiumkg, V kg5.5%Free (,S,)
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2833.29.40.00Of chromiumkg3.7%Free (,S,)
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2833.29.45.00Of zinckg1.6%Free (,S,)
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2833.29.51Other3.7%Free (,S,)
2833.29.51.10Of manganesekg
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2833.29.51.90Otherkg
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2833.30.00.00Alumskg1.6%Free (,S,)
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2833.40Peroxosulfates (persulfates)
2833.40.20.00Of sodiumkg3.7%Free (,S,)
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2833.40.60Other3.1%Free (,S,)
2833.40.60.10Of potassiumkg
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2833.40.60.20Of ammoniumkg
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2833.40.60.50Otherkg
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2834Nitrites; nitrates
2834.10Nitrites
2834.10.10.00Of sodiumkg5.5%Free (,S,)
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2834.10.50.00Otherkg3.1%Free (,S,)
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Nitrates
2834.21.00.00Of potassiumtFree
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2834.29Other
2834.29.05.00Of bismuthkg5.5%Free (,S,)
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2834.29.10.00Of calciumtFree
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2834.29.20.00Of strontiumkg4.2%Free (,S,)
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2834.29.51.00Otherkg3.5%Free (,S,)
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2835Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
2835.10.00.00Phosphinates (hypophosphites) and phosphonates (phosphites)kg3.1%Free (,S,)
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Phosphates
2835.22.00.00Of mono- or disodiumkg1.4%Free (,S,)
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2835.24.00.00Of potassiumkg3.1%Free (,S,)
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2835.25.00.00Calcium hydrogenorthophosphate ("Dicalcium phosphate")kgFree
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2835.26.00.00Other phosphates of calciumkgFree
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2835.29Other
2835.29.10.00Of aluminumkgFree
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2835.29.20.00Of triammoniumkg1.5%Free (,S,)
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2835.29.30.00Of trisodiumkg2.2%Free (,S,)
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2835.29.51.00Otherkg4.1%Free (,S,)
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Polyphosphates
2835.31.00.00Sodium triphosphate (Sodium tripolyphosphate)kg1.4%Free (,S,)
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2835.39Other
2835.39.10.00Of potassiumkg3.1%Free (,S,)
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2835.39.50.00Otherkg3.7%Free (,S,)
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2836Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
2836.20.00.00Disodium carbonatekg1.2%Free (,S,)
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2836.30.00.00Sodium hydrogencarbonate (Sodium bicarbonate)kgFree
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2836.40Potassium carbonates
2836.40.10.00Dipotassium carbonatekg1.9%Free (,S,)
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2836.40.20.00Potassium hydrogencarbonate (Potassium bicarbonate)kg1.3%Free (,S,)
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2836.50.00.00Calcium carbonatekgFree
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2836.60.00.00Barium carbonatekg2.3%Free (,S,)
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Other
2836.91.00Lithium carbonates3.7%Free (,S,)
2836.91.00.10U.S.P. gradekg
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2836.91.00.50Otherkg
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2836.92.00.00Strontium carbonatekg4.2%Free (,S,)
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2836.99Other
2836.99.10.00Cobalt carbonateskg4.2%Free (,S,)
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2836.99.20.00Bismuth carbonatekg5.5%Free (,S,)
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2836.99.30.00Commercial ammonium carbonate and other ammonium carbonateskg1.7%Free (,S,)
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2836.99.40.00Lead carbonateskg0.5%Free (,S,)
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2836.99.50Other3.7%Free (,S,)
2836.99.50.10Zirconium carbonateskg
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2836.99.50.50Otherkg
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2837Cyanides, cyanide oxides and complex cyanides
Cyanides and cyanide oxides
2837.11.00.00Of sodiumkgFree
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2837.19.01OtherFree
2837.19.01.10Potassium cyanidekg
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2837.19.01.15Calcium cyanidekg
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2837.19.01.25Otherkg
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2837.20Complex cyanides
2837.20.10.00Potassium ferricyanidekg1.1%Free (,S,)
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2837.20.51.00Otherkg1.7%Free (,S,)
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2839Silicates; commercial alkali metal silicates
Of sodium
2839.11.00.00Sodium metasilicateskg1.1%Free (,S,)
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2839.19.00.00Otherkg1.1%Free (,S,)
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2839.90Other
2839.90.10.00Of potassiumkg3.1%Free (,S,)
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2839.90.50.00Otherkg3.1%Free (*,S,)
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2840Borates; peroxoborates (perborates)
Disodium tetraborate (refined borax)
2840.11.00.00Anhydrouskg0.3%Free (,S,)
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2840.19.00.00Otherkg0.1%Free (,S,)
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2840.20.00.00Other borateskg3.7%Free (,S,)
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2840.30.00Peroxoborates (perborates)3.7%Free (,S,)
2840.30.00.10Sodium perboratekg
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2840.30.00.50Otherkg
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2841Salts of oxometallic or peroxometallic acids
2841.30.00.00Sodium dichromatekg2.4%Free (*,S,)
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2841.50Other chromates and dichromates; peroxochromates
2841.50.10.00Potassium dichromatekg1.5%Free (,S,)
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2841.50.91.00Otherkg3.1%Free (*,S,)
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Manganites, manganates and permanganates
2841.61.00.00Potassium permanganatekg5%Free (,S,)
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2841.69.00Other5%Free (,S,)
2841.69.00.10Sodium permanganatekg
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2841.69.00.90Otherkg
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2841.70Molybdates
2841.70.10.00Of ammoniumkg, Mo kg4.3%Free (,S,)
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2841.70.50.00Otherkg, Mo kg3.7%Free (,S,)
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2841.80.00Tungstates (wolframates)5.5%Free (, S,)
2841.80.00.10Of ammoniumkg, W kg
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2841.80.00.20Of calciumkg, W kg
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2841.80.00.50Otherkg, W kg
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2841.90Other
2841.90.10.00Vanadateskg, V kg5.5%Free (,S,)
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2841.90.20.00Ammonium perrhenatekg3.1%Free (,S,)
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2841.90.30.00Potassium stannatekg3.1%Free (,S,)
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2841.90.40.00Aluminateskg3.1%Free (,S,)
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2841.90.45.00Chromates of zinc or of leadkg3.7%Free (,S,)
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2841.90.50.00Otherkg3.7%Free (,JS,)
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2842Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides
2842.10.00.00Double or complex silicates, including aluminosilicates whether or not chemically definedkg3.7%Free (, S,)
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2842.90Other
2842.90.10.00Fulminates, cyanates and thiocyanateskg3.1%Free (,S,)
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2842.90.90Other3.3%Free (,S,)
2842.90.90.10Selenides and tellurideskg
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2842.90.90.50Otherkg
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VI. MISCELLANEOUS
2843Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals
2843.10.00.00Colloidal precious metalsg5.5%Free (, S,)
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Silver compounds
2843.21.00.00Silver nitratekg3.7%Free (,S,)
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2843.29.01.00Otherkg3.7%Free (,S,)
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2843.30.00.00Gold compoundskg5%Free (*,S,)
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2843.90.00.00Other compounds; amalgamskg3.7%Free (,S,)
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2844Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products
2844.10Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds
2844.10.10.00Uranium metalkg5%Free (,S,)
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2844.10.20Uranium compoundsFree
2844.10.20.10Oxidekg
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2844.10.20.25Hexafluoridekg
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2844.10.20.55Otherkg
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2844.10.50.00Otherkg5%Free (, S,)
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2844.20.00Uranium 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 productsFree
Uranium compounds
2844.20.00.10Oxidekg
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2844.20.00.20Fluorideskg
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2844.20.00.30Otherkg
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2844.20.00.50Otherkg
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2844.30Uranium 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
2844.30.10.00Thorium compoundskg5.5%Free (,S,)
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2844.30.20Uranium compoundsFree
2844.30.20.10Oxidekg
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2844.30.20.20Fluorideskg
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2844.30.20.50Otherkg
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2844.30.50Other5%Free (,S,)
2844.30.50.10Uranium metalkg
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2844.30.50.50Otherkg
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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
2844.41.00.00Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compoundskgFree
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2844.42.00.00Actinium-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 compoundsGBqFree
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2844.43.00Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compoundsFree
2844.43.00.10Elements, isotopes and compounds with cobalt-60 radioactivity onlyGBq
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Other elements, isotopes and compounds
2844.43.00.21Americium-241, californium-252, cesium-137, gadolinium-153, idium-192, promethium-147, radium-226, selenium-75, or ytterbium-169GBq
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2844.43.00.28OtherGBq
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2844.43.00.50Otherkg
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2844.44.00.00Radioactive residueskgFree
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2844.50.00.00Spent (irradiated) fuel elements (cartridges) of nuclear reactorskgFree
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2845Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined
2845.10.00.00Heavy water (Deuterium oxide)kgFree
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2845.20.00.00Boron enriched in boron-10 and its compoundskgFree
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2845.30.00.00Lithium enriched in lithium-6 and its compoundskgFree
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2845.40.00.00Helium-3kgFree
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2845.90.01.00OtherkgFree
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2846Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals
2846.10.00Cerium compounds5.5%Free (,S,)
2846.10.00.10Cerium oxideskg
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2846.10.00.50Otherkg
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2846.90Other
2846.90.20Mixtures of rare-earth oxides or of rare-earth chloridesFree
Rare-earth oxides except cerium oxides
2846.90.20.05Containing lanthanum as the predominant metalkg
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2846.90.20.15Containing yttrium or scandium as the predominant metalkg
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2846.90.20.40Otherkg
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Rare-earth chlorides except cerium chlorides
2846.90.20.82Containing yttrium or scandium as the predominant metalkg
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2846.90.20.84Otherkg
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Other
2846.90.40.00Yttrium bearing materials and compounds containing by weight more than 19 percent but less than 85 percent yttrium oxide equivalentkgFree
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2846.90.80Other3.7%Free (,S,)
Mixtures of rare-earth carbonates other than of cerium carbonate
2846.90.80.70Containing lanthanum as the predominant metalkg
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2846.90.80.75Otherkg
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2846.90.80.90Otherkg
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2847.00.00.00Hydrogen peroxide, whether or not solidified with ureakg3.7%Free (,S,)
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2849Carbides, whether or not chemically defined
2849.10.00.00Of calciumkg1.8%Free (*,S,)
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2849.20Of silicon
2849.20.10.00CrudekgFree
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2849.20.20.00In grains, or ground, pulverized or refinedkg0.5%Free (,S,)
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2849.90Other
2849.90.10.00Of boronkg3.7%Free (,S,)
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2849.90.20.00Of chromiumkg4.2%Free (,S,)
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2849.90.30.00Of tungstenkg, W kg5.5%Free (, S,)
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2849.90.50.00Otherkg3.7%Free (,S,)
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2850.00Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849
2850.00.05.00Of calciumkgFree
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2850.00.07.00Of titaniumkg4.9%Free (,S,)
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2850.00.10.00Of tungstenkg, W kg5.5%Free (, S,)
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2850.00.20.00Of vanadiumkg, V kg5.5%Free (,S,)
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2850.00.50.00Otherkg3.7%Free (*,S,)
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2852Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams
2852.10Chemically defined
2852.10.10.00Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanidekgFree
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2852.10.90.00Otherkg3%Free (,S,)
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2852.90Other
2852.90.05.00Albuminates, tannates and phosphides of mercurykgFree
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2852.90.90.00Otherkg3%Free (,S,)
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2853Phosphides, 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
2853.10.00.00Cyanogen chloride (chloorcyan)kg2.8%Free (,S,)
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2853.90Other
Phosphides, whether or not chemically defined, excluding ferrophosphorous
2853.90.10.00Of copper (phosphor copper), containing more than 15 percent by weight of phosphorouskg2.6%Free (,S,)
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2853.90.50.00Of other metals or nonmetalskgFree
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2853.90.90Other2.8%Free (,S,)
2853.90.90.10Gallium arsenide wafers, undopedkg
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2853.90.90.90Otherkg
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I. HYDROCARBONS AND THEIR HALOGENATED, SULFONATED, NITRATED OR NITROSATED DERIVATIVES

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