United States tariff, chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
Last updated
Key facts
- National lines
- 336
- Subheadings
- 180
- Tariff
- United States
- Chapter
- 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
Summary
The United States tariff has 336 national lines in HS chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes), under 180 subheadings in 50 headings.
Subheadings with United States lines
The United States tariff has 336 national lines in HS chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes), under 180 subheadings in 50 headings.
Subheadings 101 to 180 of 180, page 2 of 2.
28.32 Sulfites; thiosulfates
28.33 Sulfates; alums; peroxosulfates (persulfates)
- 2833.11Sodium sulphates: Disodium sulphate3 lines
- 2833.19Sodium sulphates: Other1 line
- 2833.21Other sulphates: Of magnesium1 line
- 2833.22Other sulphates: Of aluminium1 line
- 2833.24Other sulphates: Of nickel1 line
- 2833.25Other sulphates: Of copper1 line
- 2833.27Other sulphates: Of barium1 line
- 2833.29Other sulphates: Other7 lines
- 2833.30Alums1 line
- 2833.40Peroxosulphates (persulphates)4 lines
28.34 Nitrites; nitrates
28.35 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
- 2835.10Phosphinates (hypophosphites) and phosphonates (phosphites)1 line
- 2835.22Phosphates: Of mono- or disodium1 line
- 2835.24Phosphates: Of potassium1 line
- 2835.25Phosphates: Calcium hydrogenorthophosphate (“dicalcium phosphate”)1 line
- 2835.26Phosphates: Other phosphates of calcium1 line
- 2835.29Phosphates: Other4 lines
- 2835.31Polyphosphates: Sodium triphosphate (sodium tripolyphosphate)1 line
- 2835.39Polyphosphates: Other2 lines
28.36 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
28.37 Cyanides, cyanide oxides and complex cyanides
28.39 Silicates; commercial alkali metal silicates
28.40 Borates; peroxoborates (perborates)
28.41 Salts of oxometallic or peroxometallic acids
- 2841.30Sodium dichromate1 line
- 2841.50Other chromates and dichromates; peroxochromates2 lines
- 2841.61Manganites, manganates and permanganates: Potassium permanganate1 line
- 2841.69Manganites, manganates and permanganates: Other2 lines
- 2841.70Molybdates2 lines
- 2841.80Tungstates (wolframates)3 lines
- 2841.90Other6 lines
28.42 Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides
28.43 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals
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
- 2844.10Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds5 lines
- 2844.20Uranium enriched in U 235 and its compounds; plutonium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U 235, plutonium or compounds of these products4 lines
- 2844.30Uranium depleted in U 235 and its compounds; thorium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium depleted in U 235, thorium or compounds of these products6 lines
- 2844.41Radioactive 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 compounds1 line
- 2844.42Radioactive 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: 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 compounds1 line
- 2844.43Radioactive 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: Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds4 lines
- 2844.44Radioactive 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: Radioactive residues1 line
- 2844.50Spent (irradiated) fuel elements (cartridges) of nuclear reactors1 line
28.45 Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined
28.46 Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals
28.47 Hydrogen peroxide, whether or not solidified with urea
- 2847.00Hydrogen peroxide, whether or not solidified with urea1 line
28.49 Carbides, whether or not chemically defined
28.50 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49
- 2850.00Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.495 lines
28.52 Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams
28.53 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
In other countries
No other national tariff on border.bot has live lines under chapter 28 yet.
Frequently asked questions
How many national tariff lines does the United States tariff have in HS chapter 28?
The United States tariff has 336 national lines in HS chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes), under 180 subheadings in 50 headings.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: