Section VI: Products of the Chemical or Allied Industries
Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
Chapter 28 of the U.S. Harmonized Tariff Schedule covers Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes and sits within Section VI: Products of the Chemical or Allied Industries.
About Chapter 28
Chapter 28 contains 336 10-digit statistical lines grouped under 40 4-digit headings. Brokers, importers, and customs counsel use these codes to declare inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes on entry summaries (CBP Form 7501) and to look up the applicable Column 1, Special, and Column 2 duty rates.
General (Column 1) duty rates for ad-valorem lines in Chapter 28 range from 0.1% to 5.5%, with a median of 3.7%. About 21% of the chapter's lines (69 of 336) enter duty-free under the general rate. Special-program rates (USMCA, KORUS, GSP, AGOA, and others) and Chapter 99 overlays modify these base rates for qualifying shipments.
Every code page links into the Tandom Tariff Calculator with the HTS code prefilled, so you can compute the full landed duty for a specific shipment by entering value, country of origin, and (where relevant) material content or date of entry. Tandom's data refreshes daily from USITC HTSUS, CBP CSMS, the Federal Register, and the Department of Commerce — the same authoritative sources the trade community files against.
2801Fluorine, chlorine, bromine and iodine:
2801Fluorine, chlorine, bromine and iodine:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2801.10.00.00 | Chlorine | Free | 25% | — | kg |
| 2801.20.00.00 | Iodine | Free | Free | — | kg |
| 2801.30 | Fluorine; bromine: | — | — | — | — |
| 2801.30.10.00 | ·Fluorine | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2801.30.20.00 | ·Bromine | 5.5% | 37% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S, SG) | kg |
2802Sulfur, sublimed or precipitated; colloidal sulfur
2802Sulfur, sublimed or precipitated; colloidal sulfur| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2802.00.00.00 | Sulfur, sublimed or precipitated; colloidal sulfur | Free | Free | — | t |
2803
2803| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2803.00.00 | Carbon (carbon blacks and other forms of carbon not elsewhere specified or included) | Free | 20% | — | — |
| 2803.00.00.10 | Carbon black | — | — | — | kg |
| 2803.00.00.50 | Other | — | — | — | kg |
2804Hydrogen, rare gases and other nonmetals:
2804Hydrogen, rare gases and other nonmetals:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2804.10.00.00 | Hydrogen | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | thousand m3 |
| 2804.21.00.00 | ·Argon | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | thousand m3 |
| 2804.29.00 | ·Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2804.29.00.10 | ··Helium | — | — | — | thousand m3 |
| 2804.29.00.20 | ··Neon | — | — | — | thousand m3 |
| 2804.29.00.30 | ··Isotopically pure rare gases having a purity of 99 percent or more by volume | — | — | — | thousand m3 |
| 2804.29.00.55 | ··Other | — | — | — | thousand m3 |
| 2804.30.00.00 | Nitrogen | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | thousand m3 |
| 2804.40.00.00 | Oxygen | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | thousand m3 |
| 2804.50.00 | Boron; tellurium | Free | 25% | — | — |
| 2804.50.00.10 | ·Boron | — | — | — | kg |
| 2804.50.00.20 | ·Tellurium | — | — | — | kg |
| 2804.61.00.00 | ·Containing by weight not less than 99.99 percent of silicon | Free | 25% | — | kg |
| 2804.69 | ·Other: | — | — | — | — |
| 2804.69.10.00 | ··Containing by weight less than 99.99 percent but not less than 99 percent of silicon | 5.3% | 21% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, Si kg |
| 2804.69.50.00 | ··Other | 5.5% | 45% | Free (A+,AU,BH,CL,CO,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) | kg, Si kg |
| 2804.70.00.00 | Phosphorus | Free | 17.6¢/kg | — | kg |
| 2804.80.00.00 | Arsenic | Free | 13.2¢/kg | — | kg |
| 2804.90.00.00 | Selenium | Free | Free | — | kg |
2805Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:
2805Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2805.11.00.00 | ·Sodium | 5.3% | 25% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | kg |
| 2805.12.00.00 | ·Calcium | 3% | 25% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | kg |
| 2805.19 | ·Other: | — | — | — | — |
| 2805.19.10.00 | ··Strontium | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2805.19.20.00 | ··Barium | Free | 25% | — | kg |
| 2805.19.90 | ··Other | 5.5% | 25% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) | — |
| 2805.19.90.10 | ···Lithium | — | — | — | kg |
| 2805.19.90.90 | ···Other | — | — | — | kg |
| 2805.30.00 | Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed | 5% | 31.3% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P,PA,PE,S,SG) | — |
| 2805.30.00.05 | ··Lanthanum | — | — | — | kg |
| 2805.30.00.10 | ··Cerium | — | — | — | kg |
| 2805.30.00.15 | ··Praseodymium | — | — | — | kg |
| 2805.30.00.20 | ··Neodymium | — | — | — | kg |
| 2805.30.00.50 | ··Other | — | — | — | kg |
| 2805.30.00.90 | ·Other | — | — | — | kg |
| 2805.40.00.00 | Mercury | 1.7% | 5.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2806Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid:
2806Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2806.10.00.00 | Hydrogen chloride (Hydrochloric acid) | Free | Free | — | t |
| 2806.20.00.00 | Chlorosulfuric acid | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2807Sulfuric acid; oleum
2807Sulfuric acid; oleum| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2807.00.00.00 | Sulfuric acid; oleum | Free | Free | — | t |
2808
2808| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2808.00.00 | Nitric acid; sulfonitric acids | Free | Free | — | — |
| 2808.00.00.10 | Nitric acid | — | — | — | kg |
| 2808.00.00.20 | Sulfonitric acids | — | — | — | kg |
2809Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined:
2809Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2809.10.00.00 | Diphosphorus pentaoxide | Free | 25% | — | kg |
| 2809.20.00 | Phosphoric acid and polyphosphoric acids | Free | Free | — | — |
| 2809.20.00.10 | ···Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents | — | — | — | t |
| 2809.20.00.20 | ···Other | — | — | — | t |
| 2809.20.00.30 | ··Other | — | — | — | t |
| 2809.20.00.40 | ·Polyphosphoric acids | — | — | — | t |
2810Oxides of boron; boric acids
2810Oxides of boron; boric acids| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2810.00.00.00 | Oxides of boron; boric acids | 1.5% | 8.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | t |
2811Other inorganic acids and other inorganic oxygen compounds of nonmetals:
2811Other inorganic acids and other inorganic oxygen compounds of nonmetals:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2811.11.00.00 | ·Hydrogen fluoride (Hydrofluoric acid) | Free | Free | — | kg |
| 2811.12.00.00 | ·Hydrogen cyanide (hydrocyanic acid) | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2811.19 | ·Other: | — | — | — | — |
| 2811.19.10.00 | ··Arsenic acid | 2.3% | 4.9% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2811.19.30.00 | ··Hydrobromic acid | Free | 25% | — | kg |
| 2811.19.61 | ··Other | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2811.19.61.10 | ···Sulfamic acid | — | — | — | kg |
| 2811.19.61.90 | ···Other | — | — | — | kg |
| 2811.21.00.00 | ·Carbon dioxide | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | t |
| 2811.22 | ·Silicon dioxide: | — | — | — | — |
| 2811.22.10.00 | ··Synthetic silica gel | 3.7% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2811.22.50.00 | ··Other | Free | Free | — | kg |
| 2811.29 | ·Other: | — | — | — | — |
| 2811.29.10.00 | ··Arsenic trioxide | Free | Free | — | kg |
| 2811.29.20.00 | ··Selenium dioxide | Free | Free | — | kg |
| 2811.29.30.00 | ··Sulfur dioxide | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2811.29.50.00 | ··Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2812Halides and halide oxides of nonmetals:
2812Halides and halide oxides of nonmetals:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2812.11.00.00 | ·Carbonyl dichloride (phosgene) | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2812.12.00.00 | ·Phosphorous oxychloride | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2812.13.00.00 | ·Phosphorous trichloride | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2812.14.00.00 | ·Phosphorous pentachloride | Free | 25% | — | kg |
| 2812.15.00.00 | ·Sulfur monochloride | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2812.16.00.00 | ·Sulfur dichloride | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2812.17.00.00 | ·Thionyl chloride | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2812.19.00 | ·Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2812.19.00.10 | ··Arsenic trichloride | — | — | — | kg |
| 2812.19.00.90 | ··Other | — | — | — | kg |
| 2812.90.00 | Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2812.90.00.10 | ·Sulfur hexafluoride | — | — | — | kg |
| 2812.90.00.90 | ·Other | — | — | — | kg |
2813Sulfides of nonmetals; commercial phosphorus trisulfide:
2813Sulfides of nonmetals; commercial phosphorus trisulfide:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2813.10.00.00 | Carbon disulfide | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2813.90 | Other: | — | — | — | — |
| 2813.90.10.00 | ·Of arsenic | Free | Free | — | kg |
| 2813.90.20.00 | ·Of phosphorus | Free | 25% | — | kg |
| 2813.90.50.00 | ·Other | 3.7% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2814Ammonia, anhydrous or in aqueous solution:
2814Ammonia, anhydrous or in aqueous solution:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2814.10.00.00 | Anhydrous ammonia | Free | Free | — | t |
| 2814.20.00.00 | Ammonia in aqueous solution | Free | Free | — | t, NH3 t |
2815Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium:
2815Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2815.11.00.00 | ·Solid | Free | 1.1¢/kg | — | kg |
| 2815.12.00.00 | ·In aqueous solution (Soda lye or liquid soda) | Free | 1.1¢/kg | — | kg, NaOH kg |
| 2815.20.00 | Potassium hydroxide (Caustic potash) | Free | 2.2¢/kg | — | — |
| 2815.20.00.50 | ·In solid form | — | — | — | kg |
| 2815.20.00.90 | ·Other | — | — | — | kg |
| 2815.30.00.00 | Peroxides of sodium or potassium | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2816Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium:
2816Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2816.10.00.00 | Hydroxide and peroxide of magnesium | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2816.40 | Oxides, hydroxides and peroxides, of strontium or barium: | — | — | — | — |
| 2816.40.10.00 | ·Of strontium | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2816.40.20.00 | ·Of barium | 2% | 10.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2817Zinc oxide; zinc peroxide
2817Zinc oxide; zinc peroxide| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2817.00.00.00 | Zinc oxide; zinc peroxide | Free | 5.5% | — | kg |
2818Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide:
2818Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2818.10 | Artificial corundum, whether or not chemically defined: | — | — | — | — |
| 2818.10.10.00 | ·Crude | Free | Free | — | t |
| 2818.10.20 | ·In grains, or ground, pulverized or refined | 1.3% | 4.1% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2818.10.20.10 | ··White, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide | — | — | — | kg |
| 2818.10.20.90 | ··Other | — | — | — | kg |
| 2818.20.00.00 | Aluminum oxide, other than artificial corundum | Free | 1.1¢/kg | — | kg |
| 2818.30.00.00 | Aluminum hydroxide | Free | 1.1¢/kg | — | kg |
2819Chromium oxides and hydroxides:
2819Chromium oxides and hydroxides:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2819.10.00.00 | Chromium trioxide | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2819.90.00.00 | Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2820Manganese oxides:
2820Manganese oxides:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2820.10.00.00 | Manganese dioxide | 4.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2820.90.00.00 | Other | 4.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2821Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3:
2821Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2821.10.00 | Iron oxides and hydroxides | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2821.10.00.10 | ··Black | — | — | — | kg |
| 2821.10.00.20 | ··Red | — | — | — | kg |
| 2821.10.00.30 | ··Yellow | — | — | — | kg |
| 2821.10.00.40 | ··Other | — | — | — | kg |
| 2821.10.00.50 | ·Other | — | — | — | kg |
| 2821.20.00.00 | Earth colors | 5.5% | 20% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2822
2822| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2822.00.00 | Cobalt oxides and hydroxides; commercial cobalt oxides | 0.1% | 1.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2822.00.00.10 | Cobalt(II, III) oxide (cobalt tetroxide) | — | — | — | kg |
| 2822.00.00.90 | Other | — | — | — | kg |
2823Titanium oxides
2823Titanium oxides| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2823.00.00.00 | Titanium oxides | 5.5% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2824Lead oxides; red lead and orange lead:
2824Lead oxides; red lead and orange lead:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2824.10.00.00 | Lead monoxide (litharge, massicot) | 3% | 12% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2824.90 | Other: | — | — | — | — |
| 2824.90.10.00 | ·Lead suboxide (leady litharge) | 5.5% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2824.90.20.00 | ·Red lead and orange lead | 3.4% | 12.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2824.90.50.00 | ·Other | 4.8% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2825Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:
2825Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2825.10.00.00 | Hydrazine and hydroxylamine and their inorganic salts | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.20.00.00 | Lithium oxide and hydroxide | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.30.00 | Vanadium oxides and hydroxides | 5.5% | 40% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2825.30.00.10 | ·Vanadium pentoxide (anhydride) | — | — | — | kg, V kg |
| 2825.30.00.50 | ·Other | — | — | — | kg, V kg |
| 2825.40.00.00 | Nickel oxides and hydroxides | Free | Free | — | kg |
| 2825.50 | Copper oxides and hydroxides: | — | — | — | — |
| 2825.50.10.00 | ·Cupric oxide | 4.3% | 31% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.50.20.00 | ·Cuprous oxide | 5% | 39.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.50.30.00 | ·Copper hydroxides | 3.9% | 32.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.60.00 | Germanium oxides and zirconium dioxide | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2825.60.00.10 | ·Germanium dioxide | kg | |||
| 2825.60.00.20 | ·Zirconium dioxide | kg | |||
| 2825.60.00.50 | ·Other | kg | |||
| 2825.70.00.00 | Molybdenum oxides and hydroxides | 3.2% | 20.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.80.00.00 | Antimony oxides | Free | 4.4¢/kg | — | kg |
| 2825.90 | Other: | — | — | — | — |
| 2825.90.10.00 | ·Beryllium oxide and hydroxide | 3.7% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.90.15.00 | ·Niobium oxide | 3.7% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.90.20.00 | ·Tin oxides | 4.2% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2825.90.30.00 | ·Tungsten oxides | 5.5% | 45.5% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | kg, W kg |
| 2825.90.75.00 | ·Cadmium oxide | Free | 25% | — | kg |
| 2825.90.90.00 | ·Other | 3.7% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2826Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts:
2826Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2826.12.00.00 | ·Of aluminum | Free | 25% | — | kg |
| 2826.19 | ·Other: | — | — | — | — |
| 2826.19.10.00 | ··Of ammonium | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2826.19.20.00 | ··Of sodium | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2826.19.90.00 | ··Other | 3.9% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2826.30.00.00 | Sodium hexafluoroaluminate (Synthetic cryolite) | Free | Free | — | t |
| 2826.90 | Other: | — | — | — | — |
| 2826.90.10.00 | ·Fluorosilicates of sodium or of potassium | 4.1% | 62.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2826.90.90 | ·Other | 3.1% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2826.90.90.10 | ···Lithium hexafluorophosphate | — | — | — | kg |
| 2826.90.90.90 | ···Other | — | — | — | kg |
2827Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides:
2827Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2827.10.00.00 | Ammonium chloride | 2.9% | 18% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.20.00.00 | Calcium chloride | Free | Free | — | kg |
| 2827.31.00.00 | ·Of magnesium | 1.5% | 5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.32.00.00 | ·Of aluminum | Free | 25% | — | kg |
| 2827.35.00.00 | ·Of nickel | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.39 | ·Other: | — | — | — | — |
| 2827.39.10.00 | ··Of vanadium | 5.5% | 40% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, V kg |
| 2827.39.25.00 | ··Of tin | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.39.30.00 | ··Of titanium | 4.9% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.39.40.00 | ··Of tungsten | 5.5% | 45.5% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | kg, W kg |
| 2827.39.45.00 | ··Of barium | 4.2% | 28.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.39.55.00 | ··Of iron | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.39.60.00 | ··Of cobalt | 4.2% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.39.65.00 | ··Of zinc | 1.6% | 5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.39.90 | ··Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2827.39.90.10 | ···Of lithium | kg | |||
| 2827.39.90.50 | ···Other | kg | |||
| 2827.41.00.00 | ·Of copper | 3.9% | 32.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.49 | ·Other: | — | — | — | — |
| 2827.49.10.00 | ··Of vanadium | 5.5% | 40% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, V kg |
| 2827.49.50.00 | ··Other | 5.5% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.51.00.00 | ·Bromides of sodium or of potassium | Free | 22¢/kg | — | kg |
| 2827.59 | ·Other: | — | — | — | — |
| 2827.59.25.00 | ··Of ammonium, of calcium or of zinc | Free | 25% | — | kg |
| 2827.59.51.00 | ··Other | 3.6% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.60 | Iodides and iodide oxides: | — | — | — | — |
| 2827.60.10.00 | ·Of calcium or of copper | Free | 25% | — | kg |
| 2827.60.20.00 | ·Of potassium | 2.8% | 7.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2827.60.51.00 | ·Other | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2828Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites:
2828Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2828.10.00.00 | Commercial calcium hypochlorite and other calcium hypochlorites | 2.4% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2828.90.00.00 | Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2829Chlorates and perchlorates; bromates and perbromates; iodates and periodates:
2829Chlorates and perchlorates; bromates and perbromates; iodates and periodates:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2829.11.00.00 | ·Of sodium | Free | 13% | — | kg |
| 2829.19.01.00 | ·Other | 3.3% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2829.90 | Other: | — | — | — | — |
| 2829.90.05.00 | ·Potassium bromate | Free | 25% | — | kg |
| 2829.90.25.00 | ·Sodium bromate | Free | 25% | — | kg |
| 2829.90.40.00 | ··Of potassium | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2829.90.61.00 | ··Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2830Sulfides; polysulfides, whether or not chemically defined:
2830Sulfides; polysulfides, whether or not chemically defined:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2830.10.00.00 | Sodium sulfides | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2830.90 | Other: | — | — | — | — |
| 2830.90.10.00 | ·Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight | Free | 11% | — | kg |
| 2830.90.15.00 | ·Other zinc sulfide | 2.8% | 11% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2830.90.20.00 | ·Cadmium sulfide | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2830.90.90.00 | ·Other | 3% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2831Dithionites and sulfoxylates:
2831Dithionites and sulfoxylates:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2831.10 | Of sodium: | — | — | — | — |
| 2831.10.10.00 | ·Sodium formaldehyde sulfoxylate | Free | 35% | — | kg |
| 2831.10.50.00 | ·Other | 5.5% | 35% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2831.90.00.00 | Other | 5.5% | 35% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2832Sulfites; thiosulfates:
2832Sulfites; thiosulfates:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2832.10.00.00 | Sodium sulfites | 1.5% | 4.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2832.20.00.00 | Other sulfites | 3.1% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2832.30 | Thiosulfates: | — | — | — | — |
| 2832.30.10.00 | ·Sodium thiosulfate | 1.5% | 4.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2832.30.50.00 | ·Other | 3.1% | 4.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2833Sulfates; alums; peroxosulfates (persulfates):
2833Sulfates; alums; peroxosulfates (persulfates):| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2833.11 | ·Disodium sulfate: | — | — | — | — |
| 2833.11.10.00 | ··Salt cake | Free | Free | — | t |
| 2833.11.50 | ··Other | 0.4% | 3.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2833.11.50.10 | ···Anhydrous | — | — | — | t |
| 2833.11.50.50 | ···Other | — | — | — | t |
| 2833.19.00.00 | ·Other | Free | Free | — | kg |
| 2833.21.00.00 | ·Of magnesium | 3.7% | 20% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.22.00.00 | ·Of aluminum | Free | 10% | — | kg |
| 2833.24.00.00 | ·Of nickel | 3.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.25.00.00 | ·Of copper | 1.4% | 5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, Cu kg |
| 2833.27.00.00 | ·Of barium | 0.6% | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.29 | ·Other: | — | — | — | — |
| 2833.29.10.00 | ··Of cobalt | 1.4% | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.29.20.00 | ··Of iron | Free | Free | — | kg |
| 2833.29.30.00 | ··Of vanadium | 5.5% | 40% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, V kg |
| 2833.29.40.00 | ··Of chromium | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.29.45.00 | ··Of zinc | 1.6% | 8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.29.51 | ··Other | 3.7% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2833.29.51.10 | ···Of manganese | — | — | — | kg |
| 2833.29.51.90 | ···Other | — | — | — | kg |
| 2833.30.00.00 | Alums | 1.6% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.40 | Peroxosulfates (persulfates): | — | — | — | — |
| 2833.40.20.00 | ·Of sodium | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2833.40.60 | ·Other | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2833.40.60.10 | ··Of potassium | — | — | — | kg |
| 2833.40.60.20 | ··Of ammonium | — | — | — | kg |
| 2833.40.60.50 | ··Other | — | — | — | kg |
2834Nitrites; nitrates:
2834Nitrites; nitrates:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2834.10 | Nitrites: | — | — | — | — |
| 2834.10.10.00 | ·Of sodium | 5.5% | 54% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2834.10.50.00 | ·Other | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2834.21.00.00 | ·Of potassium | Free | Free | — | t |
| 2834.29 | ·Other: | — | — | — | — |
| 2834.29.05.00 | ··Of bismuth | 5.5% | 35% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2834.29.10.00 | ··Of calcium | Free | Free | — | t |
| 2834.29.20.00 | ··Of strontium | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2834.29.51.00 | ··Other | 3.5% | 10% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2835Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined:
2835Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2835.10.00.00 | Phosphinates (hypophosphites) and phosphonates (phosphites) | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.22.00.00 | ·Of mono- or disodium | 1.4% | 6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.24.00.00 | ·Of potassium | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.25.00.00 | ·Calcium hydrogenorthophosphate ("Dicalcium phosphate") | Free | 25% | — | kg |
| 2835.26.00.00 | ·Other phosphates of calcium | Free | 25% | — | kg |
| 2835.29 | ·Other: | — | — | — | — |
| 2835.29.10.00 | ··Of aluminum | Free | 25% | — | kg |
| 2835.29.20.00 | ··Of triammonium | 1.5% | 8.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.29.30.00 | ··Of trisodium | 2.2% | 11.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.29.51.00 | ··Other | 4.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.31.00.00 | ·Sodium triphosphate (Sodium tripolyphosphate) | 1.4% | 6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.39 | ·Other: | — | — | — | — |
| 2835.39.10.00 | ··Of potassium | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2835.39.50.00 | ··Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2836Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate:
2836Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2836.20.00.00 | Disodium carbonate | 1.2% | 8.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.30.00.00 | Sodium hydrogencarbonate (Sodium bicarbonate) | Free | Free | — | kg |
| 2836.40 | Potassium carbonates: | — | — | — | — |
| 2836.40.10.00 | ·Dipotassium carbonate | 1.9% | 6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.40.20.00 | ·Potassium hydrogencarbonate (Potassium bicarbonate) | 1.3% | 4.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.50.00.00 | Calcium carbonate | Free | 25% | — | kg |
| 2836.60.00.00 | Barium carbonate | 2.3% | 8.4% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.91.00 | ·Lithium carbonates | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2836.91.00.10 | ··U.S.P. grade | — | — | — | kg |
| 2836.91.00.50 | ··Other | — | — | — | kg |
| 2836.92.00.00 | ·Strontium carbonate | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.99 | ·Other: | — | — | — | — |
| 2836.99.10.00 | ··Cobalt carbonates | 4.2% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.99.20.00 | ··Bismuth carbonate | 5.5% | 35% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.99.30.00 | ··Commercial ammonium carbonate and other ammonium carbonates | 1.7% | 16% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.99.40.00 | ··Lead carbonates | 0.5% | 4.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2836.99.50 | ··Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2836.99.50.10 | ···Zirconium carbonates | kg | |||
| 2836.99.50.50 | ···Other | kg |
2837Cyanides, cyanide oxides and complex cyanides:
2837Cyanides, cyanide oxides and complex cyanides:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2837.11.00.00 | ·Of sodium | Free | Free | — | kg |
| 2837.19.01 | ·Other | Free | Free | — | — |
| 2837.19.01.10 | ··Potassium cyanide | — | — | — | kg |
| 2837.19.01.15 | ··Calcium cyanide | — | — | — | kg |
| 2837.19.01.25 | ··Other | — | — | — | kg |
| 2837.20 | Complex cyanides: | — | — | — | — |
| 2837.20.10.00 | ·Potassium ferricyanide | 1.1% | 5.1% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2837.20.51.00 | ·Other | 1.7% | 8.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2839Silicates; commercial alkali metal silicates:
2839Silicates; commercial alkali metal silicates:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2839.11.00.00 | ·Sodium metasilicates | 1.1% | 3% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2839.19.00.00 | ·Other | 1.1% | 3% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2839.90 | Other: | — | — | — | — |
| 2839.90.10.00 | ·Of potassium | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2839.90.50.00 | ·Other | 3.1% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2840Borates; peroxoborates (perborates):
2840Borates; peroxoborates (perborates):| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2840.11.00.00 | ·Anhydrous | 0.3% | 1.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2840.19.00.00 | ·Other | 0.1% | 0.4% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2840.20.00.00 | Other borates | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2840.30.00 | Peroxoborates (perborates) | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2840.30.00.10 | ·Sodium perborate | — | — | — | kg |
| 2840.30.00.50 | ·Other | — | — | — | kg |
2841Salts of oxometallic or peroxometallic acids:
2841Salts of oxometallic or peroxometallic acids:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2841.30.00.00 | Sodium dichromate | 2.4% | 8.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.50 | Other chromates and dichromates; peroxochromates: | — | — | — | — |
| 2841.50.10.00 | ·Potassium dichromate | 1.5% | 3.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.50.91.00 | ·Other | 3.1% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.61.00.00 | ·Potassium permanganate | 5% | 23% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.69.00 | ·Other | 5% | 23% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2841.69.00.10 | ··Sodium permanganate | — | — | — | kg |
| 2841.69.00.90 | ··Other | — | — | — | kg |
| 2841.70 | Molybdates: | — | — | — | — |
| 2841.70.10.00 | ·Of ammonium | 4.3% | 29% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, Mo kg |
| 2841.70.50.00 | ·Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, Mo kg |
| 2841.80.00 | Tungstates (wolframates) | 5.5% | 49.5% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | — |
| 2841.80.00.10 | ·Of ammonium | — | — | — | kg, W kg |
| 2841.80.00.20 | ·Of calcium | — | — | — | kg, W kg |
| 2841.80.00.50 | ·Other | — | — | — | kg, W kg |
| 2841.90 | Other: | — | — | — | — |
| 2841.90.10.00 | ·Vanadates | 5.5% | 40% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, V kg |
| 2841.90.20.00 | ·Ammonium perrhenate | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.90.30.00 | ·Potassium stannate | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.90.40.00 | ·Aluminates | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.90.45.00 | ·Chromates of zinc or of lead | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2841.90.50.00 | ·Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | kg |
2842Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides:
2842Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2842.10.00.00 | Double or complex silicates, including aluminosilicates whether or not chemically defined | 3.7% | 25% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG) | kg |
| 2842.90 | Other: | — | — | — | — |
| 2842.90.10.00 | ·Fulminates, cyanates and thiocyanates | 3.1% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2842.90.90 | ·Other | 3.3% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2842.90.90.10 | ··Selenides and tellurides | kg | |||
| 2842.90.90.50 | ··Other | kg |
2843Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals:
2843Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2843.10.00.00 | Colloidal precious metals | 5.5% | 65% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | g |
| 2843.21.00.00 | ·Silver nitrate | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2843.29.01.00 | ·Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2843.30.00.00 | Gold compounds | 5% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2843.90.00.00 | Other compounds; amalgams | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | kg |
2844Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products:
2844Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2844.10 | Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds: | — | — | — | — |
| 2844.10.10.00 | ·Uranium metal | 5% | 45% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2844.10.20 | ·Uranium compounds | Free | Free | — | — |
| 2844.10.20.10 | ··Oxide | — | — | — | kg |
| 2844.10.20.25 | ··Hexafluoride | — | — | — | kg |
| 2844.10.20.55 | ··Other | — | — | — | kg |
| 2844.10.50.00 | ·Other | 5% | 45% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | kg |
| 2844.20.00 | Uranium 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 products | Free | Free | — | — |
| 2844.20.00.10 | ··Oxide | — | — | — | kg |
| 2844.20.00.20 | ··Fluorides | — | — | — | kg |
| 2844.20.00.30 | ··Other | — | — | — | kg |
| 2844.20.00.50 | ·Other | — | — | — | kg |
| 2844.30 | Uranium 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: | — | — | — | — |
| 2844.30.10.00 | ·Thorium compounds | 5.5% | 35% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2844.30.20 | ·Uranium compounds | Free | Free | — | — |
| 2844.30.20.10 | ··Oxide | — | — | — | kg |
| 2844.30.20.20 | ··Fluorides | — | — | — | kg |
| 2844.30.20.50 | ··Other | — | — | — | kg |
| 2844.30.50 | ·Other | 5% | 45% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2844.30.50.10 | ··Uranium metal | — | — | — | kg |
| 2844.30.50.50 | ··Other | — | — | — | kg |
| 2844.41.00.00 | ·Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds | Free | Free | — | kg |
| 2844.42.00.00 | ·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 compounds | Free | Free | — | GBq |
| 2844.43.00 | ·Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds | Free | Free | — | — |
| 2844.43.00.10 | ··Elements, isotopes and compounds with cobalt-60 radioactivity only | — | — | — | GBq |
| 2844.43.00.21 | ···Americium-241, californium-252, cesium-137, gadolinium-153, idium-192, promethium-147, radium-226, selenium-75, or ytterbium-169 | — | — | — | GBq |
| 2844.43.00.28 | ···Other | — | — | — | GBq |
| 2844.43.00.50 | ··Other | — | — | — | kg |
| 2844.44.00.00 | ·Radioactive residues | Free | Free | — | kg |
| 2844.50.00.00 | Spent (irradiated) fuel elements (cartridges) of nuclear reactors | Free | Free | — | kg |
2845Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined:
2845Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2845.10.00.00 | Heavy water (Deuterium oxide) | Free | 25% | — | kg |
| 2845.20.00.00 | Boron enriched in boron-10 and its compounds | Free | 25% | — | kg |
| 2845.30.00.00 | Lithium enriched in lithium-6 and its compounds | Free | 25% | — | kg |
| 2845.40.00.00 | Helium-3 | Free | 25% | — | kg |
| 2845.90.01.00 | Other | Free | 25% | — | kg |
2846Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals:
2846Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2846.10.00 | Cerium compounds | 5.5% | 35% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2846.10.00.10 | ·Cerium oxides | — | — | — | kg |
| 2846.10.00.50 | ·Other | — | — | — | kg |
| 2846.90 | Other: | — | — | — | — |
| 2846.90.20 | ·Mixtures of rare-earth oxides or of rare-earth chlorides | Free | 25% | — | — |
| 2846.90.20.05 | ···Containing lanthanum as the predominant metal | — | — | — | kg |
| 2846.90.20.15 | ···Containing yttrium or scandium as the predominant metal | — | — | — | kg |
| 2846.90.20.40 | ···Other | — | — | — | kg |
| 2846.90.20.82 | ···Containing yttrium or scandium as the predominant metal | — | — | — | kg |
| 2846.90.20.84 | ···Other | — | — | — | kg |
| 2846.90.40.00 | ··Yttrium bearing materials and compounds containing by weight more than 19 percent but less than 85 percent yttrium oxide equivalent | Free | 25% | — | kg |
| 2846.90.80 | ··Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2846.90.80.70 | ····Containing lanthanum as the predominant metal | — | — | — | kg |
| 2846.90.80.75 | ····Other | — | — | — | kg |
| 2846.90.80.90 | ···Other | — | — | — | kg |
2847Hydrogen peroxide, whether or not solidified with urea
2847Hydrogen peroxide, whether or not solidified with urea| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2847.00.00.00 | Hydrogen peroxide, whether or not solidified with urea | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2849Carbides, whether or not chemically defined:
2849Carbides, whether or not chemically defined:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2849.10.00.00 | Of calcium | 1.8% | 10% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2849.20 | Of silicon: | — | — | — | — |
| 2849.20.10.00 | ·Crude | Free | Free | — | kg |
| 2849.20.20.00 | ·In grains, or ground, pulverized or refined | 0.5% | 1.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2849.90 | Other: | — | — | — | — |
| 2849.90.10.00 | ·Of boron | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2849.90.20.00 | ·Of chromium | 4.2% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2849.90.30.00 | ·Of tungsten | 5.5% | 55.5% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | kg, W kg |
| 2849.90.50.00 | ·Other | 3.7% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2850
2850| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2850.00 | Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: | — | — | — | — |
| 2850.00.05.00 | Of calcium | Free | 25% | — | kg |
| 2850.00.07.00 | Of titanium | 4.9% | 30% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2850.00.10.00 | Of tungsten | 5.5% | 45.5% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | kg, W kg |
| 2850.00.20.00 | Of vanadium | 5.5% | 40% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg, V kg |
| 2850.00.50.00 | Other | 3.7% | 25% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
2852Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams:
2852Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2852.10 | Chemically defined: | — | — | — | — |
| 2852.10.10.00 | ·Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanide | Free | 25% | — | kg |
| 2852.10.90.00 | ·Other | 3% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2852.90 | Other: | — | — | — | — |
| 2852.90.05.00 | ·Albuminates, tannates and phosphides of mercury | Free | 25% | — | kg |
| 2852.90.90.00 | ·Other | 3% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
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:
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:| Code | Description | General | Column 2 | Special | Units |
|---|---|---|---|---|---|
| 2853.10.00.00 | Cyanogen chloride (chloorcyan) | 2.8% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2853.90 | Other: | — | — | — | — |
| 2853.90.10.00 | ··Of copper (phosphor copper), containing more than 15 percent by weight of phosphorous | 2.6% | 32.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | kg |
| 2853.90.50.00 | ··Of other metals or nonmetals | Free | 25% | — | kg |
| 2853.90.90 | ·Other | 2.8% | 25% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | — |
| 2853.90.90.10 | ··Gallium arsenide wafers, undoped | — | — | — | kg |
| 2853.90.90.90 | ··Other | — | — | — | kg |
Frequently asked questions
What does HTS Chapter 28 cover?
Chapter 28 of the U.S. Harmonized Tariff Schedule (HTSUS) covers Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes. It sits within Section VI: Products of the Chemical or Allied Industries. Tandom's catalog lists all 336 10-digit statistical lines and 40 4-digit headings in this chapter.
What is the typical U.S. duty rate for Chapter 28 imports?
General (Column 1) duty rates for ad-valorem lines range from 0.1% to 5.5% (median 3.7%); roughly 29% of lines enter duty-free. Use the calculator linked from each code page to compute the full landed rate, including Section 301/232 overlays, IEEPA tariffs, and AD/CVD deposits where applicable.
Are Section 301 or Section 232 tariffs applied to Chapter 28 products?
Section 301 (China) and Section 232 (steel, aluminum, copper) tariffs are layered on top of the base HTSUS rate via Chapter 99 provisions. Whether they apply to a specific 10-digit line in Chapter 28 depends on the product's country of origin, material content, and the active proclamation. Open any code in this chapter to see the live overlay stack and effective rate.
Are there antidumping or countervailing duty (AD/CVD) orders covering Chapter 28 products?
AD/CVD orders are issued at the case level by the Department of Commerce against specific products from specific countries. Tandom's AD/CVD catalog cross-references every active order to the HTS codes it covers — open any code in Chapter 28 to see flagged orders, deposit rates, and the underlying scope determinations.