Chapter 28Chemical Products
Inorganic Chemicals — US Tariff Rates
US tariff rates for inorganic chemicals, precious metal compounds, radioactive elements, and rare earth metals. HTS codes and import duties.
HTS Codes
192
2024 Imports
$110.4B
Top Supplier
TOTAL FOR ALL COUNTRIES
Source Countries
4649
⚠
Additional Tariffs Apply to This Chapter
Section 301 tariffs apply to imports from China. Use our Landed Cost Calculator for a full duty breakdown by country of origin.
HTS Codes in Chapter 28 — Inorganic Chemicals
| HTS Code | Description | Base Duty | Tariff Flags | Actions |
|---|---|---|---|---|
| 2801.10.00.00 | Chlorine | Free | §301 +25%§122 +15% | |
| 2801.20.00.00 | Iodine | Free | §301 +25%§122 +15% | |
| 2801.30.10.00 | Fluorine | 3.7% | §301 +25%§122 +15% | |
| 2801.30.20.00 | Bromine | 5.5% | §301 +25%§122 +15% | |
| 2802.00.00.00 | Sulfur, sublimed or precipitated; colloidal sulfur | Free | §301 +25%§122 +15% | |
| 2803.00.00 | Carbon (carbon blacks and other forms of carbon not elsewhere specified or included) | Free | §301 +25%§122 +15% | |
| 2804.10.00.00 | Hydrogen | 3.7% | §301 +25%§122 +15% | |
| 2804.21.00.00 | Argon | 3.7% | §301 +25%§122 +15% | |
| 2804.29.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2804.30.00.00 | Nitrogen | 3.7% | §301 +25%§122 +15% | |
| 2804.40.00.00 | Oxygen | 3.7% | §301 +25%§122 +15% | |
| 2804.50.00 | Boron; tellurium | Free | §301 +25%§122 +15% | |
| 2804.61.00.00 | Containing by weight not less than 99.99 percent of silicon | Free | §301 +25%§122 +15% | |
| 2804.69.10.00 | Containing by weight less than 99.99 percent but not less than 99 percent of silicon | 5.3% | §301 +25%§122 +15% | |
| 2804.69.50.00 | Other | 5.5% | §301 +25%§122 +15% | |
| 2804.70.00.00 | Phosphorus | Free | §301 +25%§122 +15% | |
| 2804.80.00.00 | Arsenic | Free | §301 +25%§122 +15% | |
| 2804.90.00.00 | Selenium | Free | §301 +25%§122 +15% | |
| 2805.11.00.00 | Sodium | 5.3% | §301 +25%§122 +15% | |
| 2805.12.00.00 | Calcium | 3% | §301 +25%§122 +15% | |
| 2805.19.10.00 | Strontium | 3.7% | §301 +25%§122 +15% | |
| 2805.19.20.00 | Barium | Free | §301 +25%§122 +15% | |
| 2805.19.90 | Other | 5.5% | §301 +25%§122 +15% | |
| 2805.30.00 | Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed | 5% | §301 +25%§122 +15% | |
| 2805.40.00.00 | Mercury | 1.7% | §301 +25%§122 +15% | |
| 2806.10.00.00 | Hydrogen chloride (Hydrochloric acid) | Free | §301 +25%§122 +15% | |
| 2806.20.00.00 | Chlorosulfuric acid | 4.2% | §301 +25%§122 +15% | |
| 2807.00.00.00 | Sulfuric acid; oleum | Free | §301 +25%§122 +15% | |
| 2808.00.00 | Nitric acid; sulfonitric acids | Free | §301 +25%§122 +15% | |
| 2809.10.00.00 | Diphosphorus pentaoxide | Free | §301 +25%§122 +15% | |
| 2809.20.00 | Phosphoric acid and polyphosphoric acids | Free | §301 +25%§122 +15% | |
| 2810.00.00.00 | Oxides of boron; boric acids | 1.5% | §301 +25%§122 +15% | |
| 2811.11.00.00 | Hydrogen fluoride (Hydrofluoric acid) | Free | §301 +25%§122 +15% | |
| 2811.12.00.00 | Hydrogen cyanide (hydrocyanic acid) | 4.2% | §301 +25%§122 +15% | |
| 2811.19.10.00 | Arsenic acid | 2.3% | §301 +25%§122 +15% | |
| 2811.19.30.00 | Hydrobromic acid | Free | §301 +25%§122 +15% | |
| 2811.19.61 | Other | 4.2% | §301 +25%§122 +15% | |
| 2811.21.00.00 | Carbon dioxide | 3.7% | §301 +25%§122 +15% | |
| 2811.22.10.00 | Synthetic silica gel | 3.7% | §301 +25%§122 +15% | |
| 2811.22.50.00 | Other | Free | §301 +25%§122 +15% | |
| 2811.29.10.00 | Arsenic trioxide | Free | §301 +25%§122 +15% | |
| 2811.29.20.00 | Selenium dioxide | Free | §301 +25%§122 +15% | |
| 2811.29.30.00 | Sulfur dioxide | 4.2% | §301 +25%§122 +15% | |
| 2811.29.50.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2812.11.00.00 | Carbonyl dichloride (phosgene) | 3.7% | §301 +25%§122 +15% | |
| 2812.12.00.00 | Phosphorous oxychloride | 3.7% | §301 +25%§122 +15% | |
| 2812.13.00.00 | Phosphorous trichloride | 3.7% | §301 +25%§122 +15% | |
| 2812.14.00.00 | Phosphorous pentachloride | Free | §301 +25%§122 +15% | |
| 2812.15.00.00 | Sulfur monochloride | 3.7% | §301 +25%§122 +15% | |
| 2812.16.00.00 | Sulfur dichloride | 3.7% | §301 +25%§122 +15% | |
| 2812.17.00.00 | Thionyl chloride | 3.7% | §301 +25%§122 +15% | |
| 2812.19.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2812.90.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2813.10.00.00 | Carbon disulfide | 3.7% | §301 +25%§122 +15% | |
| 2813.90.10.00 | Of arsenic | Free | §301 +25%§122 +15% | |
| 2813.90.20.00 | Of phosphorus | Free | §301 +25%§122 +15% | |
| 2813.90.50.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2814.10.00.00 | Anhydrous ammonia | Free | §301 +25%§122 +15% | |
| 2814.20.00.00 | Ammonia in aqueous solution | Free | §301 +25%§122 +15% | |
| 2815.11.00.00 | Solid | Free | §301 +25%§122 +15% | |
| 2815.12.00.00 | In aqueous solution (Soda lye or liquid soda) | Free | §301 +25%§122 +15% | |
| 2815.20.00 | Potassium hydroxide (Caustic potash) | Free | §301 +25%§122 +15% | |
| 2815.30.00.00 | Peroxides of sodium or potassium | 3.7% | §301 +25%§122 +15% | |
| 2816.10.00.00 | Hydroxide and peroxide of magnesium | 3.1% | §301 +25%§122 +15% | |
| 2816.40.10.00 | Of strontium | 4.2% | §301 +25%§122 +15% | |
| 2816.40.20.00 | Of barium | 2% | §301 +25%§122 +15% | |
| 2817.00.00.00 | Zinc oxide; zinc peroxide | Free | §301 +25%§122 +15% | |
| 2818.10.10.00 | Crude | Free | §301 +25%§122 +15% | |
| 2818.10.20 | In grains, or ground, pulverized or refined | 1.3% | §301 +25%§122 +15% | |
| 2818.20.00.00 | Aluminum oxide, other than artificial corundum | Free | §301 +25%§122 +15% | |
| 2818.30.00.00 | Aluminum hydroxide | Free | §301 +25%§122 +15% | |
| 2819.10.00.00 | Chromium trioxide | 3.7% | §301 +25%§122 +15% | |
| 2819.90.00.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2820.10.00.00 | Manganese dioxide | 4.7% | §301 +25%§122 +15% | |
| 2820.90.00.00 | Other | 4.7% | §301 +25%§122 +15% | |
| 2821.10.00 | Iron oxides and hydroxides | 3.7% | §301 +25%§122 +15% | |
| 2821.20.00.00 | Earth colors | 5.5% | §301 +25%§122 +15% | |
| 2822.00.00 | Cobalt oxides and hydroxides; commercial cobalt oxides | 0.1% | §301 +25%§122 +15% | |
| 2823.00.00.00 | Titanium oxides | 5.5% | §301 +25%§122 +15% | |
| 2824.10.00.00 | Lead monoxide (litharge, massicot) | 3% | §301 +25%§122 +15% | |
| 2824.90.10.00 | Lead suboxide (leady litharge) | 5.5% | §301 +25%§122 +15% | |
| 2824.90.20.00 | Red lead and orange lead | 3.4% | §301 +25%§122 +15% | |
| 2824.90.50.00 | Other | 4.8% | §301 +25%§122 +15% | |
| 2825.10.00.00 | Hydrazine and hydroxylamine and their inorganic salts | 3.7% | §301 +25%§122 +15% | |
| 2825.20.00.00 | Lithium oxide and hydroxide | 3.7% | §301 +25%§122 +15% | |
| 2825.30.00 | Vanadium oxides and hydroxides | 5.5% | §301 +25%§122 +15% | |
| 2825.40.00.00 | Nickel oxides and hydroxides | Free | §301 +25%§122 +15% | |
| 2825.50.10.00 | Cupric oxide | 4.3% | §301 +25%§122 +15% | |
| 2825.50.20.00 | Cuprous oxide | 5% | §301 +25%§122 +15% | |
| 2825.50.30.00 | Copper hydroxides | 3.9% | §301 +25%§122 +15% | |
| 2825.60.00 | Germanium oxides and zirconium dioxide | 3.7% | §301 +25%§122 +15% | |
| 2825.60.00.10 | Germanium dioxide | §301 +25%§122 +15% | ||
| 2825.60.00.20 | Zirconium dioxide | §301 +25%§122 +15% | ||
| 2825.60.00.50 | Other | §301 +25%§122 +15% | ||
| 2825.70.00.00 | Molybdenum oxides and hydroxides | 3.2% | §301 +25%§122 +15% | |
| 2825.80.00.00 | Antimony oxides | Free | §301 +25%§122 +15% | |
| 2825.90.10.00 | Beryllium oxide and hydroxide | 3.7% | §301 +25%§122 +15% | |
| 2825.90.15.00 | Niobium oxide | 3.7% | §301 +25%§122 +15% | |
| 2825.90.20.00 | Tin oxides | 4.2% | §301 +25%§122 +15% | |
| 2825.90.30.00 | Tungsten oxides | 5.5% | §301 +25%§122 +15% | |
| 2825.90.75.00 | Cadmium oxide | Free | §301 +25%§122 +15% | |
| 2825.90.90.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2826.12.00.00 | Of aluminum | Free | §301 +25%§122 +15% | |
| 2826.19.10.00 | Of ammonium | 3.1% | §301 +25%§122 +15% | |
| 2826.19.20.00 | Of sodium | 3.7% | §301 +25%§122 +15% | |
| 2826.19.90.00 | Other | 3.9% | §301 +25%§122 +15% | |
| 2826.30.00.00 | Sodium hexafluoroaluminate (Synthetic cryolite) | Free | §301 +25%§122 +15% | |
| 2826.90.10.00 | Fluorosilicates of sodium or of potassium | 4.1% | §301 +25%§122 +15% | |
| 2826.90.90 | Other | 3.1% | §301 +25%§122 +15% | |
| 2827.10.00.00 | Ammonium chloride | 2.9% | §301 +25%§122 +15% | |
| 2827.20.00.00 | Calcium chloride | Free | §301 +25%§122 +15% | |
| 2827.31.00.00 | Of magnesium | 1.5% | §301 +25%§122 +15% | |
| 2827.32.00.00 | Of aluminum | Free | §301 +25%§122 +15% | |
| 2827.35.00.00 | Of nickel | 3.7% | §301 +25%§122 +15% | |
| 2827.39.10.00 | Of vanadium | 5.5% | §301 +25%§122 +15% | |
| 2827.39.25.00 | Of tin | 4.2% | §301 +25%§122 +15% | |
| 2827.39.30.00 | Of titanium | 4.9% | §301 +25%§122 +15% | |
| 2827.39.40.00 | Of tungsten | 5.5% | §301 +25%§122 +15% | |
| 2827.39.45.00 | Of barium | 4.2% | §301 +25%§122 +15% | |
| 2827.39.55.00 | Of iron | 3.7% | §301 +25%§122 +15% | |
| 2827.39.60.00 | Of cobalt | 4.2% | §301 +25%§122 +15% | |
| 2827.39.65.00 | Of zinc | 1.6% | §301 +25%§122 +15% | |
| 2827.39.90 | Other | 3.7% | §301 +25%§122 +15% | |
| 2827.39.90.10 | Of lithium | §301 +25%§122 +15% | ||
| 2827.39.90.50 | Other | §301 +25%§122 +15% | ||
| 2827.41.00.00 | Of copper | 3.9% | §301 +25%§122 +15% | |
| 2827.49.10.00 | Of vanadium | 5.5% | §301 +25%§122 +15% | |
| 2827.49.50.00 | Other | 5.5% | §301 +25%§122 +15% | |
| 2827.51.00.00 | Bromides of sodium or of potassium | Free | §301 +25%§122 +15% | |
| 2827.59.25.00 | Of ammonium, of calcium or of zinc | Free | §301 +25%§122 +15% | |
| 2827.59.51.00 | Other | 3.6% | §301 +25%§122 +15% | |
| 2827.60.10.00 | Of calcium or of copper | Free | §301 +25%§122 +15% | |
| 2827.60.20.00 | Of potassium | 2.8% | §301 +25%§122 +15% | |
| 2827.60.51.00 | Other | 4.2% | §301 +25%§122 +15% | |
| 2828.10.00.00 | Commercial calcium hypochlorite and other calcium hypochlorites | 2.4% | §301 +25%§122 +15% | |
| 2828.90.00.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2829.11.00.00 | Of sodium | Free | §301 +25%§122 +15% | |
| 2829.19.01.00 | Other | 3.3% | §301 +25%§122 +15% | |
| 2829.90.05.00 | Potassium bromate | Free | §301 +25%§122 +15% | |
| 2829.90.25.00 | Sodium bromate | Free | §301 +25%§122 +15% | |
| 2829.90.40.00 | Of potassium | 3.1% | §301 +25%§122 +15% | |
| 2829.90.61.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2830.10.00.00 | Sodium sulfides | 3.7% | §301 +25%§122 +15% | |
| 2830.90.10.00 | Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight | Free | §301 +25%§122 +15% | |
| 2830.90.15.00 | Other zinc sulfide | 2.8% | §301 +25%§122 +15% | |
| 2830.90.20.00 | Cadmium sulfide | 3.1% | §301 +25%§122 +15% | |
| 2830.90.90.00 | Other | 3% | §301 +25%§122 +15% | |
| 2831.10.10.00 | Sodium formaldehyde sulfoxylate | Free | §301 +25%§122 +15% | |
| 2831.10.50.00 | Other | 5.5% | §301 +25%§122 +15% | |
| 2831.90.00.00 | Other | 5.5% | §301 +25%§122 +15% | |
| 2832.10.00.00 | Sodium sulfites | 1.5% | §301 +25%§122 +15% | |
| 2832.20.00.00 | Other sulfites | 3.1% | §301 +25%§122 +15% | |
| 2832.30.10.00 | Sodium thiosulfate | 1.5% | §301 +25%§122 +15% | |
| 2832.30.50.00 | Other | 3.1% | §301 +25%§122 +15% | |
| 2833.11.10.00 | Salt cake | Free | §301 +25%§122 +15% | |
| 2833.11.50 | Other | 0.4% | §301 +25%§122 +15% | |
| 2833.19.00.00 | Other | Free | §301 +25%§122 +15% | |
| 2833.21.00.00 | Of magnesium | 3.7% | §301 +25%§122 +15% | |
| 2833.22.00.00 | Of aluminum | Free | §301 +25%§122 +15% | |
| 2833.24.00.00 | Of nickel | 3.2% | §301 +25%§122 +15% | |
| 2833.25.00.00 | Of copper | 1.4% | §301 +25%§122 +15% | |
| 2833.27.00.00 | Of barium | 0.6% | §301 +25%§122 +15% | |
| 2833.29.10.00 | Of cobalt | 1.4% | §301 +25%§122 +15% | |
| 2833.29.20.00 | Of iron | Free | §301 +25%§122 +15% | |
| 2833.29.30.00 | Of vanadium | 5.5% | §301 +25%§122 +15% | |
| 2833.29.40.00 | Of chromium | 3.7% | §301 +25%§122 +15% | |
| 2833.29.45.00 | Of zinc | 1.6% | §301 +25%§122 +15% | |
| 2833.29.51 | Other | 3.7% | §301 +25%§122 +15% | |
| 2833.30.00.00 | Alums | 1.6% | §301 +25%§122 +15% | |
| 2833.40.20.00 | Of sodium | 3.7% | §301 +25%§122 +15% | |
| 2833.40.60 | Other | 3.1% | §301 +25%§122 +15% | |
| 2834.10.10.00 | Of sodium | 5.5% | §301 +25%§122 +15% | |
| 2834.10.50.00 | Other | 3.1% | §301 +25%§122 +15% | |
| 2834.21.00.00 | Of potassium | Free | §301 +25%§122 +15% | |
| 2834.29.05.00 | Of bismuth | 5.5% | §301 +25%§122 +15% | |
| 2834.29.10.00 | Of calcium | Free | §301 +25%§122 +15% | |
| 2834.29.20.00 | Of strontium | 4.2% | §301 +25%§122 +15% | |
| 2834.29.51.00 | Other | 3.5% | §301 +25%§122 +15% | |
| 2835.10.00.00 | Phosphinates (hypophosphites) and phosphonates (phosphites) | 3.1% | §301 +25%§122 +15% | |
| 2835.22.00.00 | Of mono- or disodium | 1.4% | §301 +25%§122 +15% | |
| 2835.24.00.00 | Of potassium | 3.1% | §301 +25%§122 +15% | |
| 2835.25.00.00 | Calcium hydrogenorthophosphate ("Dicalcium phosphate") | Free | §301 +25%§122 +15% | |
| 2835.26.00.00 | Other phosphates of calcium | Free | §301 +25%§122 +15% | |
| 2835.29.10.00 | Of aluminum | Free | §301 +25%§122 +15% | |
| 2835.29.20.00 | Of triammonium | 1.5% | §301 +25%§122 +15% | |
| 2835.29.30.00 | Of trisodium | 2.2% | §301 +25%§122 +15% | |
| 2835.29.51.00 | Other | 4.1% | §301 +25%§122 +15% | |
| 2835.31.00.00 | Sodium triphosphate (Sodium tripolyphosphate) | 1.4% | §301 +25%§122 +15% | |
| 2835.39.10.00 | Of potassium | 3.1% | §301 +25%§122 +15% | |
| 2835.39.50.00 | Other | 3.7% | §301 +25%§122 +15% | |
| 2836.20.00.00 | Disodium carbonate | 1.2% | §301 +25%§122 +15% | |
| 2836.30.00.00 | Sodium hydrogencarbonate (Sodium bicarbonate) | Free | §301 +25%§122 +15% |
Related HTS Chapters
About HTS Chapter 28 — Inorganic Chemicals
HTS Chapter 28 covers inorganic chemicals under the US Harmonized Tariff Schedule (HTS). The HTS is maintained by the US International Trade Commission (USITC) and updated periodically to reflect trade policy changes including executive orders, Section 232 national security tariffs, Section 301 China tariffs, and Section 122 emergency tariffs.
To import goods under Chapter 28, US importers must declare the correct 10-digit HTS code on their Customs entry. The duty rate shown is the general (MFN) rate. Special rates may apply under free trade agreements (FTAs) such as USMCA, CPTPP, or bilateral agreements. Use the FTA Checker to see if preferential rates apply to your shipment.
Anti-dumping (AD) and countervailing duty (CVD) orders may impose additional duties on specific products and countries of origin beyond the rates shown here. Always consult with a licensed customs broker for classification decisions.