HS chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
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Key facts
- Chapter
- 28
- Description
- Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
- Headings
- 50
- Subheadings
- 180
- Edition
- HS2022
Summary
HS chapter 28 covers inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes. It has 50 headings, 28.01 to 28.53, and 180 six-digit subheadings in HS2022. National tariff lines under chapter 28 are live on border.bot for the United States (336 lines, also used by 1 other country).
What this chapter covers
HS chapter 28 covers inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes.
It has 50 headings, 28.01 to 28.53, and 180 six-digit subheadings in HS2022.
Subheadings 1 to 100 of 180, page 1 of 2.
28.02 Sulphur, sublimed or precipitated; colloidal sulphur
- 2802.00Sulphur, sublimed or precipitated; colloidal sulphur
28.03 Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)
- 2803.00Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)
28.07 Sulphuric acid; oleum
- 2807.00Sulphuric acid; oleum
28.08 Nitric acid; sulphonitric acids
- 2808.00Nitric acid; sulphonitric acids
28.10 Oxides of boron; boric acids
- 2810.00Oxides of boron; boric acids
28.11 Other inorganic acids and other inorganic oxygen compounds of non-metals
- 2811.11Other inorganic acids: Hydrogen fluoride (hydrofluoric acid)
- 2811.12Other inorganic acids: Hydrogen cyanide (hydrocyanic acid)
- 2811.19Other inorganic acids: Other
- 2811.21Other inorganic oxygen compounds of non-metals: Carbon dioxide
- 2811.22Other inorganic oxygen compounds of non-metals: Silicon dioxide
- 2811.29Other inorganic oxygen compounds of non-metals: Other
28.12 Halides and halide oxides of non-metals
- 2812.11Chlorides and chloride oxides: Carbonyl dichloride (phosgene)
- 2812.12Chlorides and chloride oxides: Phosphorus oxychloride
- 2812.13Chlorides and chloride oxides: Phosphorus trichloride
- 2812.14Chlorides and chloride oxides: Phosphorus pentachloride
- 2812.15Chlorides and chloride oxides: Sulphur monochloride
- 2812.16Chlorides and chloride oxides: Sulphur dichloride
- 2812.17Chlorides and chloride oxides: Thionyl chloride
- 2812.19Chlorides and chloride oxides: Other
- 2812.90Other
28.17 Zinc oxide; zinc peroxide
- 2817.00Zinc oxide; zinc peroxide
28.22 Cobalt oxides and hydroxides; commercial cobalt oxides
- 2822.00Cobalt oxides and hydroxides; commercial cobalt oxides
28.23 Titanium oxides
- 2823.00Titanium oxides
28.25 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides
- 2825.10Hydrazine and hydroxylamine and their inorganic salts
- 2825.20Lithium oxide and hydroxide
- 2825.30Vanadium oxides and hydroxides
- 2825.40Nickel oxides and hydroxides
- 2825.50Copper oxides and hydroxides
- 2825.60Germanium oxides and zirconium dioxide
- 2825.70Molybdenum oxides and hydroxides
- 2825.80Antimony oxides
- 2825.90Other
28.27 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides
- 2827.10Ammonium chloride
- 2827.20Calcium chloride
- 2827.31Other chlorides: Of magnesium
- 2827.32Other chlorides: Of aluminium
- 2827.35Other chlorides: Of nickel
- 2827.39Other chlorides: Other
- 2827.41Chloride oxides and chloride hydroxides: Of copper
- 2827.49Chloride oxides and chloride hydroxides: Other
- 2827.51Bromides and bromide oxides: Bromides of sodium or of potassium
- 2827.59Bromides and bromide oxides: Other
- 2827.60Iodides and iodide oxides
What it doesn’t cover
Chapter 27, before it, covers mineral fuels, mineral oils and products of their distillation; bituminous substances; mineral waxes; chapter 29, after it, covers organic chemicals.
How it is structured
Chapter 28 is the first level of the Harmonized System. Its headings add two digits to the chapter number (28.01), and each heading's subheadings add two more.
In other countries
National tariff lines under chapter 28 are live on border.bot for the United States (336 lines, also used by 1 other country).
- United States336 lines, used by 1 other country
Frequently asked questions
What does HS chapter 28 cover?
HS chapter 28 covers inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes.
How many headings and subheadings are in HS chapter 28?
HS chapter 28 has 50 headings and 180 six-digit subheadings in HS2022.
Which countries’ tariffs list national lines in HS chapter 28?
National tariff lines under chapter 28 are live on border.bot for the United States (336 lines, also used by 1 other country).
Sources and updates
The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.
This page was last updated on 11 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.