Trade reference

HS code reference lookup

Enter a code (e.g. 8518 or 8518.30.20.00) or an English product name to see official schedule descriptions and the code hierarchy; when one description matches several candidate classifications they are all listed for you or your broker to weigh against product specifics.

Data: Harmonized Tariff Schedule of the United States (HTSUS) · Revision 22 (2026) · effective 10/30/2026 · USITC HTS · US public domain
中华人民共和国进出口税则(2026) · 税委会公告2025年第12号 · effective 2026-01-01 · official notice

A reference lookup is not a customs classification ruling. Duty rates shown are U.S. import rates only — they are not your destination country’s rates.

Digits (with or without dots) search by code prefix; words search English official descriptions. The dataset is English-only — Chinese terms get an explicit notice rather than a guess.

Chapter 28 — Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes · Section VI

Entries: 459

Code Level Official description Unit US duty (MFN / pref. / col.2)
2801 HS4 heading Fluorine, chlorine, bromine and iodine: —
2801.10.00.00 US 10-digit Chlorine kg Free / — / 25%
2801.20.00.00 US 10-digit Iodine kg Free / — / Free
2801.30 HS6 subheading Fluorine; bromine: —
2801.30.10.00 US 10-digit Fluorine kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2801.30.20.00 US 10-digit Bromine kg 5.5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S, SG) / 37%
2802.00.00.00 US 10-digit Sulfur, sublimed or precipitated; colloidal sulfur t Free / — / Free
2803.00.00 US 8-digit Carbon (carbon blacks and other forms of carbon not elsewhere specified or included) Free / — / 20% *
2803.00.00.10 US 10-digit Carbon black kg —
2803.00.00.50 US 10-digit Other kg —
2804 HS4 heading Hydrogen, rare gases and other nonmetals: —
2804.10.00.00 US 10-digit Hydrogen thousand m3 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2804.21.00.00 US 10-digit Argon thousand m3 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2804.29.00 US 8-digit Other 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2804.29.00.10 US 10-digit Helium thousand m3 —
2804.29.00.20 US 10-digit Neon thousand m3 —
2804.29.00.30 US 10-digit Isotopically pure rare gases having a purity of 99 percent or more by volume thousand m3 —
2804.29.00.55 US 10-digit Other thousand m3 —
2804.30.00.00 US 10-digit Nitrogen thousand m3 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2804.40.00.00 US 10-digit Oxygen thousand m3 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2804.50.00 US 8-digit Boron; tellurium Free / — / 25%
2804.50.00.10 US 10-digit Boron kg —
2804.50.00.20 US 10-digit Tellurium kg —
2804.61.00.00 US 10-digit Containing by weight not less than 99.99 percent of silicon kg Free / — / 25%
2804.69 HS6 subheading Other: —
2804.69.10.00 US 10-digit Containing by weight less than 99.99 percent but not less than 99 percent of silicon kg, Si kg 5.3% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 21%
2804.69.50.00 US 10-digit Other kg, Si kg 5.5% / Free (A+,AU,BH,CL,CO,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) / 45%
2804.70.00.00 US 10-digit Phosphorus kg Free / — / 17.6¢/kg
2804.80.00.00 US 10-digit Arsenic kg Free / — / 13.2¢/kg
2804.90.00.00 US 10-digit Selenium kg Free / — / Free *
2805 HS4 heading Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury: —
2805.11.00.00 US 10-digit Sodium kg 5.3% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) / 25%
2805.12.00.00 US 10-digit Calcium kg 3% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) / 25% *
2805.19 HS6 subheading Other: —
2805.19.10.00 US 10-digit Strontium kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2805.19.20.00 US 10-digit Barium kg Free / — / 25%
2805.19.90 US 8-digit Other 5.5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) / 25%
2805.19.90.10 US 10-digit Lithium kg —
2805.19.90.90 US 10-digit Other kg —
2805.30.00 US 8-digit Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed 5% / Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) / 31.3%
2805.30.00.05 US 10-digit Lanthanum kg —
2805.30.00.10 US 10-digit Cerium kg —
2805.30.00.15 US 10-digit Praseodymium kg —
2805.30.00.20 US 10-digit Neodymium kg —
2805.30.00.50 US 10-digit Other kg —
2805.30.00.90 US 10-digit Other kg —
2805.40.00.00 US 10-digit Mercury kg 1.7% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 5.7%
2806 HS4 heading Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid: —
2806.10.00.00 US 10-digit Hydrogen chloride (Hydrochloric acid) t Free / — / Free
2806.20.00.00 US 10-digit Chlorosulfuric acid kg 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2807.00.00.00 US 10-digit Sulfuric acid; oleum t Free / — / Free *
2808.00.00 US 8-digit Nitric acid; sulfonitric acids Free / — / Free
2808.00.00.10 US 10-digit Nitric acid kg —
2808.00.00.20 US 10-digit Sulfonitric acids kg —
2809 HS4 heading Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined: —
2809.10.00.00 US 10-digit Diphosphorus pentaoxide kg Free / — / 25%
2809.20.00 US 8-digit Phosphoric acid and polyphosphoric acids Free / — / Free
2809.20.00.10 US 10-digit Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents t —
2809.20.00.20 US 10-digit Other t —
2809.20.00.30 US 10-digit Other t —
2809.20.00.40 US 10-digit Polyphosphoric acids t —
2810.00.00.00 US 10-digit Oxides of boron; boric acids t 1.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 8.5%
2811 HS4 heading Other inorganic acids and other inorganic oxygen compounds of nonmetals: —
2811.11.00.00 US 10-digit Hydrogen fluoride (Hydrofluoric acid) kg Free / — / Free
2811.12.00.00 US 10-digit Hydrogen cyanide (hydrocyanic acid) kg 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2811.19 HS6 subheading Other: —
2811.19.10.00 US 10-digit Arsenic acid kg 2.3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 4.9%
2811.19.30.00 US 10-digit Hydrobromic acid kg Free / — / 25%
2811.19.61 US 8-digit Other 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2811.19.61.10 US 10-digit Sulfamic acid kg —
2811.19.61.90 US 10-digit Other kg —
2811.21.00.00 US 10-digit Carbon dioxide t 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2811.22 HS6 subheading Silicon dioxide: —
2811.22.10.00 US 10-digit Synthetic silica gel kg 3.7% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2811.22.50.00 US 10-digit Other kg Free / — / Free
2811.29 HS6 subheading Other: —
2811.29.10.00 US 10-digit Arsenic trioxide kg Free / — / Free *
2811.29.20.00 US 10-digit Selenium dioxide kg Free / — / Free
2811.29.30.00 US 10-digit Sulfur dioxide kg 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2811.29.50.00 US 10-digit Other kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2812 HS4 heading Halides and halide oxides of nonmetals: —
2812.11.00.00 US 10-digit Carbonyl dichloride (phosgene) kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2812.12.00.00 US 10-digit Phosphorous oxychloride kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2812.13.00.00 US 10-digit Phosphorous trichloride kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2812.14.00.00 US 10-digit Phosphorous pentachloride kg Free / — / 25%
2812.15.00.00 US 10-digit Sulfur monochloride kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2812.16.00.00 US 10-digit Sulfur dichloride kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2812.17.00.00 US 10-digit Thionyl chloride kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2812.19.00 US 8-digit Other 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2812.19.00.10 US 10-digit Arsenic trichloride kg —
2812.19.00.90 US 10-digit Other kg —
2812.90.00 US 8-digit Other 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2812.90.00.10 US 10-digit Sulfur hexafluoride kg —
2812.90.00.90 US 10-digit Other kg —
2813 HS4 heading Sulfides of nonmetals; commercial phosphorus trisulfide: —
2813.10.00.00 US 10-digit Carbon disulfide kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2813.90 HS6 subheading Other: —
2813.90.10.00 US 10-digit Of arsenic kg Free / — / Free
2813.90.20.00 US 10-digit Of phosphorus kg Free / — / 25%
2813.90.50.00 US 10-digit Other kg 3.7% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2814 HS4 heading Ammonia, anhydrous or in aqueous solution: —
2814.10.00.00 US 10-digit Anhydrous ammonia t Free / — / Free
2814.20.00.00 US 10-digit Ammonia in aqueous solution t, NH3 t Free / — / Free
2815 HS4 heading Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium: —
2815.11.00.00 US 10-digit Solid kg Free / — / 1.1¢/kg *
2815.12.00.00 US 10-digit In aqueous solution (Soda lye or liquid soda) kg, NaOH kg Free / — / 1.1¢/kg
2815.20.00 US 8-digit Potassium hydroxide (Caustic potash) Free / — / 2.2¢/kg
2815.20.00.50 US 10-digit In solid form kg —
2815.20.00.90 US 10-digit Other kg —
2815.30.00.00 US 10-digit Peroxides of sodium or potassium kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2816 HS4 heading Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium: —
2816.10.00.00 US 10-digit Hydroxide and peroxide of magnesium kg 3.1% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25% *
2816.40 HS6 subheading Oxides, hydroxides and peroxides, of strontium or barium: —
2816.40.10.00 US 10-digit Of strontium kg 4.2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2816.40.20.00 US 10-digit Of barium kg 2% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 10.5%
2817.00.00.00 US 10-digit Zinc oxide; zinc peroxide kg Free / — / 5.5% *
2818 HS4 heading Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide: —
2818.10 HS6 subheading Artificial corundum, whether or not chemically defined: —
2818.10.10.00 US 10-digit Crude t Free / — / Free *
2818.10.20 US 8-digit In grains, or ground, pulverized or refined 1.3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 4.1% *
2818.10.20.10 US 10-digit White, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide kg —
2818.10.20.90 US 10-digit Other kg —
2818.20.00.00 US 10-digit Aluminum oxide, other than artificial corundum kg Free / — / 1.1¢/kg
2818.30.00.00 US 10-digit Aluminum hydroxide kg Free / — / 1.1¢/kg
2819 HS4 heading Chromium oxides and hydroxides: —
2819.10.00.00 US 10-digit Chromium trioxide kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2819.90.00.00 US 10-digit Other kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2820 HS4 heading Manganese oxides: —
2820.10.00.00 US 10-digit Manganese dioxide kg 4.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2820.90.00.00 US 10-digit Other kg 4.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2821 HS4 heading Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3: —
2821.10.00 US 8-digit Iron oxides and hydroxides 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%
2821.10.00.10 US 10-digit Black kg —
2821.10.00.20 US 10-digit Red kg —
2821.10.00.30 US 10-digit Yellow kg —
2821.10.00.40 US 10-digit Other kg —
2821.10.00.50 US 10-digit Other kg —
2821.20.00.00 US 10-digit Earth colors kg 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 20%
2822.00.00 US 8-digit Cobalt oxides and hydroxides; commercial cobalt oxides 0.1% / Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 1.7%
2822.00.00.10 US 10-digit Cobalt(II, III) oxide (cobalt tetroxide) kg —
2822.00.00.90 US 10-digit Other kg —
2823.00.00.00 US 10-digit Titanium oxides kg 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 30%
2824 HS4 heading Lead oxides; red lead and orange lead: —
2824.10.00.00 US 10-digit Lead monoxide (litharge, massicot) kg 3% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 12%
2824.90 HS6 subheading Other: —
2824.90.10.00 US 10-digit Lead suboxide (leady litharge) kg 5.5% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 30%
2824.90.20.00 US 10-digit Red lead and orange lead kg 3.4% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 12.5%
2824.90.50.00 US 10-digit Other kg 4.8% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 30%
2825 HS4 heading Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides: —
2825.10.00.00 US 10-digit Hydrazine and hydroxylamine and their inorganic salts kg 3.7% / Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) / 25%

Browse by chapter

Chapters 01–97 of the Harmonized System (US chapters 98/99 are national legislation and not included).

Section I — Live Animals; Animal Products
Section II — Vegetable Products
Section III — Animal, Vegetable Or Microbial Fats And Oils And Their Cleavage Products; Prepared Edible Fats; Animal Or Vegetable Waxes
Section IV — Prepared Foodstuffs; Beverages, Spirits And Vinegar; Tobacco And Manufactured Tobacco Substitutes; Products, Whether Or Not Containing Nicotine, Intended For Inhalation Without Combustion; Other Nicotine Containing Products Intended For The Intake Of Nicotine Into The Human Body
Section V — Mineral Products
Section VI — Products Of The Chemical Or Allied Industries
Section VII — Plastics And Articles Thereof; Rubber And Articles Thereof
Section VIII — Raw Hides And Skins, Leather, Furskins And Articles Thereof; Saddlery And Harness; Travel Goods, Handbags And Similar Containers; Articles Of Animal Gut (Other Than Silkworm Gut)
Section IX — Wood And Articles Of Wood; Wood Charcoal; Cork And Articles Of Cork; Manufactures Of Straw, Of Esparto Or Of Other Plaiting Materials; Basketware And Wickerwork
Section X — Pulp Of Wood Or Of Other Fibrous Cellulosic Material; Recovered (Waste And Scrap) Paper Or Paperboard; Paper And Paperboard And Articles Thereof
Section XI — Textiles And Textile Articles
Section XII — Footwear, Headgear, Umbrellas, Sun Umbrellas, Walking-Sticks, Seat-Sticks, Whips, Riding-Crops And Parts Thereof; Prepared Feathers And Articles Made Therewith; Artificial Flowers; Articles Of Human Hair
Section XIII — Articles Of Stone, Plaster, Cement, Asbestos, Mica Or Similar Materials; Ceramic Products; Glass And Glassware
Section XIV — Natural Or Cultured Pearls, Precious Or Semiprecious Stones, Precious Metals, Metals Clad With Precious Metal, And Articles Thereof; Imitation Jewelry; Coin
Section XV — Base Metals And Articles Of Base Metal
Section XVI — Machinery And Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders And Reproducers, Television Image And Sound Recorders And Reproducers, And Parts And Accessories Of Such Articles
Section XVII — Vehicles, Aircraft, Vessels And Associated Transport Equipment
Section XVIII — Optical, Photographic, Cinematographic, Measuring, Checking, Precision, Medical Or Surgical Instruments And Apparatus; Clocks And Watches; Musical Instruments; Parts And Accessories Thereof
Section XIX — Arms And Ammunition; Parts And Accessories Thereof
Section XX — Miscellaneous Manufactured Articles
Section XXI — Works Of Art, Collectors' Pieces And Antiques

What this data covers — and what it does not

  • International layer: HS chapters 01–97 with 4-digit headings and 6-digit subheadings (HS 2022 edition) — the part shared by every member country’s tariff schedule.
  • US layer: 8-digit rate lines and 10-digit statistical suffixes of the US HTS, clearly badged; the duty columns are US import rates for reference only.
  • China layer: PRC 2026 tariff schedule 8-digit lines with official Chinese names and MFN/ordinary rates, matched to international rows by shared HS6 prefix; provisional (△), agreement, quota, VAT/consumption and 10-digit customs numbers are not in scope.
  • Not included: the EU’s 8-digit CN codes, other countries’ national extensions, WCO Explanatory Notes, and US chapters 98/99 (national legislation).
  • Descriptions are English-only. Classification of a real product needs the General Rules of Interpretation plus material, composition, use and processing details — treat every result as a candidate, not a ruling.

Official verification

For declarations, pre-classification or current rates, use an official channel:

Frequently asked

Can I declare with the code I find here?

No — this is a reference lookup. Candidate codes, official descriptions and hierarchy are informational, not a customs classification ruling. Formal classification applies the General Rules of Interpretation to material, composition, use and processing; ask your customs authority for a binding ruling when needed.

Why does one product name return several codes?

That's normal. The same description appears at different levels (heading/subheading/statistical suffix) and under different chapters — cotton, for example, lives in the yarn, fabric and apparel chapters alike. The tool lists every candidate instead of guessing one answer for you.

Whose 8- and 10-digit codes are these?

The international Harmonized System only standardizes the first six digits (2-digit chapter + 4-digit heading + 6-digit subheading). The 8/10-digit codes here are US HTS national extensions and are labelled as such; China uses an 8-digit tariff schedule and the EU an 8-digit CN code — neither is in this dataset.

Are the duty rates shown what I'd pay importing to my country?

No. The rate columns are US import duty (General MFN / Special preferential / Column 2) — they apply to imports into the United States and are shown for reference only. Check the official tariff service of your destination country for actual rates.

How does Chinese search work?

Chinese terms are matched verbatim against the official Chinese product names in the PRC 2026 tariff schedule — no machine translation, no guessed codes. Colloquial names may miss; try a more formal name or English.

How fresh is the data?

The snapshot is the USITC's 2026 HTS Revision 22 (effective 2026-10-30); the page always shows the release and its effective date and warns when the snapshot grows stale. Use the official live service for filings.

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