Chapter 28

US HTS

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

50 headings · 274 tariff lines

HeadingLines
28.01Fluorine, chlorine, bromine and iodine
4
28.02Sulfur, sublimed or precipitated; colloidal sulfur
1
28.03Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)
1
28.04Hydrogen, rare gases and other nonmetals
12
28.05Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury
7
28.06Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid
2
28.07Sulfuric acid; oleum
1
28.08Nitric acid; sulfonitric acids
1
28.09Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined
2
28.10Oxides of boron; boric acids
1
28.11Other inorganic acids and other inorganic oxygen compounds of nonmetals
12
28.12Halides and halide oxides of nonmetals
9
28.13Sulfides of nonmetals; commercial phosphorus trisulfide
4
28.14Ammonia, anhydrous or in aqueous solution
2
28.15Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium
4
28.16Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium
3
28.17Zinc oxide; zinc peroxide
1
28.18Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide
4
28.19Chromium oxides and hydroxides
2
28.20Manganese oxides
2
28.21Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe<sub>2</sub>O<sub>3</sub>
2
28.22Cobalt oxides and hydroxides; commercial cobalt oxides
1
28.23Titanium oxides
1
28.24Lead oxides; red lead and orange lead
4
28.25Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides
16
28.26Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts
7
28.27Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides
23
28.28Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites
2
28.29Chlorates and perchlorates; bromates and perbromates; iodates and periodates
6
28.30Sulfides; polysulfides, whether or not chemically defined
5
28.31Dithionites and sulfoxylates
3
28.32Sulfites; thiosulfates
4
28.33Sulfates; alums; peroxosulfates (persulfates)
17
28.34Nitrites; nitrates
7
28.35Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
12
28.36Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
13
28.37Cyanides, cyanide oxides and complex cyanides
4
28.39Silicates; commercial alkali metal silicates
4
28.40Borates; peroxoborates (perborates)
4
28.41Salts of oxometallic or peroxometallic acids
14
28.42Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides
3
28.43Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals
5
28.44Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products
12
28.45Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined
5
28.46Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals
4
28.47Hydrogen peroxide, whether or not solidified with urea
1
28.49Carbides, whether or not chemically defined
7
28.50Hydride, nitride, azide, silicide and boride of calcium
5
28.52Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams
4
28.53Phosphides, 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
4

Source: US International Trade Commission (USITC). For informational purposes only. Consult the official HTS and a licensed customs broker for binding rates.