Section VI, Chemical and allied products · HTS release 2026HTSRev21
HTS Chapter 28: headings and duty rates
Headings 2801 to 2853: 50 headings and 336 statistical lines. Each heading page gives its base-rate range and the additional duties for the main origins on 2026-10-09.
| Heading | Lines | Base rate |
|---|---|---|
| 2801Fluorine, chlorine, bromine and iodine | 4 | Free–5.5% |
| 2802Sulfur, sublimed or precipitated; colloidal sulfur | 1 | Free |
| 2803Carbon (carbon blacks and other forms of carbon not elsewhere specified or included) | 2 | Free |
| 2804Hydrogen, rare gases and other nonmetals | 16 | Free–5.5% |
| 2805Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed;… | 13 | Free–5.5% |
| 2806Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid | 2 | Free–4.2% |
| 2807Sulfuric acid; oleum | 1 | Free |
| 2808Nitric acid; sulfonitric acids | 2 | Free |
| 2809Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined | 5 | Free |
| 2810Oxides of boron; boric acids | 1 | 1.5% |
| 2811Other inorganic acids and other inorganic oxygen compounds of nonmetals | 13 | Free–4.2% |
| 2812Halides and halide oxides of nonmetals | 11 | Free–3.7% |
| 2813Sulfides of nonmetals; commercial phosphorus trisulfide | 4 | Free–3.7% |
| 2814Ammonia, anhydrous or in aqueous solution | 2 | Free |
| 2815Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium | 5 | Free–3.7% |
| 2816Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium | 3 | 2%–4.2% |
| 2817Zinc oxide; zinc peroxide | 1 | Free |
| 2818Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide | 5 | Free–1.3% |
| 2819Chromium oxides and hydroxides | 2 | 3.7% |
| 2820Manganese oxides | 2 | 4.7% |
| 2821Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3 | 6 | 3.7%–5.5% |
| 2822Cobalt oxides and hydroxides; commercial cobalt oxides | 2 | 0.1% |
| 2823Titanium oxides | 1 | 5.5% |
| 2824Lead oxides; red lead and orange lead | 4 | 3%–5.5% |
| 2825Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and… | 19 | Free–5.5% + specific |
| 2826Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts | 8 | Free–4.1% |
| 2827Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides | 24 | Free–5.5% + specific |
| 2828Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites | 2 | 2.4%–3.7% |
| 2829Chlorates and perchlorates; bromates and perbromates; iodates and periodates | 6 | Free–3.7% |
| 2830Sulfides; polysulfides, whether or not chemically defined | 5 | Free–3.7% |
| 2831Dithionites and sulfoxylates | 3 | Free–5.5% |
| 2832Sulfites; thiosulfates | 4 | 1.5%–3.1% |
| 2833Sulfates; alums; peroxosulfates (persulfates) | 21 | Free–5.5% |
| 2834Nitrites; nitrates | 7 | Free–5.5% |
| 2835Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically… | 12 | Free–4.1% |
| 2836Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate | 15 | Free–5.5% + specific |
| 2837Cyanides, cyanide oxides and complex cyanides | 6 | Free–1.7% |
| 2839Silicates; commercial alkali metal silicates | 4 | 1.1%–3.1% |
| 2840Borates; peroxoborates (perborates) | 5 | 0.1%–3.7% |
| 2841Salts of oxometallic or peroxometallic acids | 17 | 1.5%–5.5% |
| 2842Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other… | 4 | 3.1%–3.7% + specific |
| 2843Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined;… | 5 | 3.7%–5.5% |
| 2844Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and… | 23 | Free–5.5% |
| 2845Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically… | 5 | Free |
| 2846Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals | 11 | Free–5.5% |
| 2847Hydrogen peroxide, whether or not solidified with urea | 1 | 3.7% |
| 2849Carbides, whether or not chemically defined | 7 | Free–5.5% |
| 2850Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are… | 5 | Free–5.5% |
| 2852Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams | 4 | Free–3% |
| 2853Phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including… | 5 | Free–2.8% |
Changes since 2025-10-09
No statistical lines were established or discontinued in this chapter in this period. Dated changes: change list.
Scope
We do not classify goods. These pages show reference rates for HTS codes. Choosing the code for an entry is the importer's responsibility, and entries are filed by the importer of record or a licensed customs broker. Duties shown are calculations from public sources, not legal advice.