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Chapter 28: Inorganic chemicals and compounds
Browse verified, indexable HTS detail pages in this chapter. Each record links to base duty, source URL, retrieval date, and review boundaries. Inorganic chemicals, elements, acids, salts, and related compounds.
201 indexable codesPage 1 / 3
Common headings on this page
2801 · 22802 · 12803 · 12804 · 72805 · 22806 · 22807 · 12808 · 12809 · 22810 · 1
HTS detail pages
2801.10.00.00
Chlorine
Base rate: FreeSource retrieved: 2026-06-15
2801.30.10.00
Fluorine
Base rate: 3.7%Source retrieved: 2026-06-15
2802.00.00.00
Sulfur, sublimed or precipitated; colloidal sulfur
Base rate: FreeSource retrieved: 2026-06-15
2803.00.00
Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)
Base rate: FreeSource retrieved: 2026-06-15
2804.10.00.00
Hydrogen
Base rate: 3.7%Source retrieved: 2026-06-15
2804.30.00.00
Nitrogen
Base rate: 3.7%Source retrieved: 2026-06-15
2804.50.00
Boron; tellurium
Base rate: FreeSource retrieved: 2026-06-15
2804.61.00.00
Containing by weight not less than 99.99 percent of silicon
Base rate: FreeSource retrieved: 2026-06-15
2804.69.10.00
Containing by weight less than 99.99 percent but not less than 99 percent of silicon
Base rate: 5.3%Source retrieved: 2026-06-15
2804.70.00.00
Phosphorus
Base rate: FreeSource retrieved: 2026-06-15
2804.90.00.00
Selenium
Base rate: FreeSource retrieved: 2026-06-15
2805.19.10.00
Strontium
Base rate: 3.7%Source retrieved: 2026-06-15
2805.30.00
Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed
Base rate: 5%Source retrieved: 2026-06-15
2806.10.00.00
Hydrogen chloride (Hydrochloric acid)
Base rate: FreeSource retrieved: 2026-06-15
2806.20.00.00
Chlorosulfuric acid
Base rate: 4.2%Source retrieved: 2026-06-15
2807.00.00.00
Sulfuric acid; oleum
Base rate: FreeSource retrieved: 2026-06-15
2808.00.00
Nitric acid; sulfonitric acids
Base rate: FreeSource retrieved: 2026-06-15
2809.10.00.00
Diphosphorus pentaoxide
Base rate: FreeSource retrieved: 2026-06-15
2809.20.00
Phosphoric acid and polyphosphoric acids
Base rate: FreeSource retrieved: 2026-06-15
2810.00.00.00
Oxides of boron; boric acids
Base rate: 1.5%Source retrieved: 2026-06-15
2811.11.00.00
Hydrogen fluoride (Hydrofluoric acid)
Base rate: FreeSource retrieved: 2026-06-15
2811.12.00.00
Hydrogen cyanide (hydrocyanic acid)
Base rate: 4.2%Source retrieved: 2026-06-15
2811.19.10.00
Arsenic acid
Base rate: 2.3%Source retrieved: 2026-06-15
2811.19.30.00
Hydrobromic acid
Base rate: FreeSource retrieved: 2026-06-15
2811.21.00.00
Carbon dioxide
Base rate: 3.7%Source retrieved: 2026-06-15
2811.22.10.00
Synthetic silica gel
Base rate: 3.7%Source retrieved: 2026-06-15
2811.29.10.00
Arsenic trioxide
Base rate: FreeSource retrieved: 2026-06-15
2811.29.20.00
Selenium dioxide
Base rate: FreeSource retrieved: 2026-06-15
2811.29.30.00
Sulfur dioxide
Base rate: 4.2%Source retrieved: 2026-06-15
2812.11.00.00
Carbonyl dichloride (phosgene)
Base rate: 3.7%Source retrieved: 2026-06-15
2812.12.00.00
Phosphorous oxychloride
Base rate: 3.7%Source retrieved: 2026-06-15
2812.13.00.00
Phosphorous trichloride
Base rate: 3.7%Source retrieved: 2026-06-15
2812.14.00.00
Phosphorous pentachloride
Base rate: FreeSource retrieved: 2026-06-15
2812.15.00.00
Sulfur monochloride
Base rate: 3.7%Source retrieved: 2026-06-15
2812.16.00.00
Sulfur dichloride
Base rate: 3.7%Source retrieved: 2026-06-15
2812.17.00.00
Thionyl chloride
Base rate: 3.7%Source retrieved: 2026-06-15
2813.10.00.00
Carbon disulfide
Base rate: 3.7%Source retrieved: 2026-06-15
2813.90.10.00
Of arsenic
Base rate: FreeSource retrieved: 2026-06-15
2813.90.20.00
Of phosphorus
Base rate: FreeSource retrieved: 2026-06-15
2814.10.00.00
Anhydrous ammonia
Base rate: FreeSource retrieved: 2026-06-15
2814.20.00.00
Ammonia in aqueous solution
Base rate: FreeSource retrieved: 2026-06-15
2815.12.00.00
In aqueous solution (Soda lye or liquid soda)
Base rate: FreeSource retrieved: 2026-06-15
2815.20.00
Potassium hydroxide (Caustic potash)
Base rate: FreeSource retrieved: 2026-06-15
2815.30.00.00
Peroxides of sodium or potassium
Base rate: 3.7%Source retrieved: 2026-06-15
2816.10.00.00
Hydroxide and peroxide of magnesium
Base rate: 3.1%Source retrieved: 2026-06-15
2816.40.10.00
Of strontium
Base rate: 4.2%Source retrieved: 2026-06-15
2816.40.20.00
Of barium
Base rate: 2%Source retrieved: 2026-06-15
2817.00.00.00
Zinc oxide; zinc peroxide
Base rate: FreeSource retrieved: 2026-06-15
2818.10.20
In grains, or ground, pulverized or refined
Base rate: 1.3%Source retrieved: 2026-06-15
2818.20.00.00
Aluminum oxide, other than artificial corundum
Base rate: FreeSource retrieved: 2026-06-15
2818.30.00.00
Aluminum hydroxide
Base rate: FreeSource retrieved: 2026-06-15
2819.10.00.00
Chromium trioxide
Base rate: 3.7%Source retrieved: 2026-06-15
2820.10.00.00
Manganese dioxide
Base rate: 4.7%Source retrieved: 2026-06-15
2821.10.00
Iron oxides and hydroxides
Base rate: 3.7%Source retrieved: 2026-06-15
2821.20.00.00
Earth colors
Base rate: 5.5%Source retrieved: 2026-06-15
2822.00.00
Cobalt oxides and hydroxides; commercial cobalt oxides
Base rate: 0.1%Source retrieved: 2026-06-15
2823.00.00.00
Titanium oxides
Base rate: 5.5%Source retrieved: 2026-06-15
2824.10.00.00
Lead monoxide (litharge, massicot)
Base rate: 3%Source retrieved: 2026-06-15
2824.90.10.00
Lead suboxide (leady litharge)
Base rate: 5.5%Source retrieved: 2026-06-15
2824.90.20.00
Red lead and orange lead
Base rate: 3.4%Source retrieved: 2026-06-15
2825.10.00.00
Hydrazine and hydroxylamine and their inorganic salts
Base rate: 3.7%Source retrieved: 2026-06-15
2825.20.00.00
Lithium oxide and hydroxide
Base rate: 3.7%Source retrieved: 2026-06-15
2825.30.00
Vanadium oxides and hydroxides
Base rate: 5.5%Source retrieved: 2026-06-15
2825.40.00.00
Nickel oxides and hydroxides
Base rate: FreeSource retrieved: 2026-06-15
2825.50.10.00
Cupric oxide
Base rate: 4.3%Source retrieved: 2026-06-15
2825.50.20.00
Cuprous oxide
Base rate: 5%Source retrieved: 2026-06-15
2825.50.30.00
Copper hydroxides
Base rate: 3.9%Source retrieved: 2026-06-15
2825.60.00
Germanium oxides and zirconium dioxide
Base rate: 3.7%Source retrieved: 2026-06-15
2825.70.00.00
Molybdenum oxides and hydroxides
Base rate: 3.2%Source retrieved: 2026-06-15
2825.80.00.00
Antimony oxides
Base rate: FreeSource retrieved: 2026-06-15
2825.90.10.00
Beryllium oxide and hydroxide
Base rate: 3.7%Source retrieved: 2026-06-15
2825.90.15.00
Niobium oxide
Base rate: 3.7%Source retrieved: 2026-06-15
2825.90.20.00
Tin oxides
Base rate: 4.2%Source retrieved: 2026-06-15
2825.90.30.00
Tungsten oxides
Base rate: 5.5%Source retrieved: 2026-06-15
2825.90.75.00
Cadmium oxide
Base rate: FreeSource retrieved: 2026-06-15
2826.12.00.00
Of aluminum
Base rate: FreeSource retrieved: 2026-06-15
2826.19.10.00
Of ammonium
Base rate: 3.1%Source retrieved: 2026-06-15
2826.19.20.00
Of sodium
Base rate: 3.7%Source retrieved: 2026-06-15
2826.30.00.00
Sodium hexafluoroaluminate (Synthetic cryolite)
Base rate: FreeSource retrieved: 2026-06-15
2826.90.10.00
Fluorosilicates of sodium or of potassium
Base rate: 4.1%Source retrieved: 2026-06-15
2827.10.00.00
Ammonium chloride
Base rate: 2.9%Source retrieved: 2026-06-15
2827.20.00.00
Calcium chloride
Base rate: FreeSource retrieved: 2026-06-15
2827.31.00.00
Of magnesium
Base rate: 1.5%Source retrieved: 2026-06-15
2827.32.00.00
Of aluminum
Base rate: FreeSource retrieved: 2026-06-15
2827.35.00.00
Of nickel
Base rate: 3.7%Source retrieved: 2026-06-15
2827.39.10.00
Of vanadium
Base rate: 5.5%Source retrieved: 2026-06-15
2827.39.30.00
Of titanium
Base rate: 4.9%Source retrieved: 2026-06-15
2827.39.40.00
Of tungsten
Base rate: 5.5%Source retrieved: 2026-06-15
2827.39.45.00
Of barium
Base rate: 4.2%Source retrieved: 2026-06-15
2827.39.60.00
Of cobalt
Base rate: 4.2%Source retrieved: 2026-06-15
2827.41.00.00
Of copper
Base rate: 3.9%Source retrieved: 2026-06-15
2827.49.10.00
Of vanadium
Base rate: 5.5%Source retrieved: 2026-06-15
2827.51.00.00
Bromides of sodium or of potassium
Base rate: FreeSource retrieved: 2026-06-15
2827.59.25.00
Of ammonium, of calcium or of zinc
Base rate: FreeSource retrieved: 2026-06-15
2827.60.10.00
Of calcium or of copper
Base rate: FreeSource retrieved: 2026-06-15
2827.60.20.00
Of potassium
Base rate: 2.8%Source retrieved: 2026-06-15
2828.10.00.00
Commercial calcium hypochlorite and other calcium hypochlorites
Base rate: 2.4%Source retrieved: 2026-06-15
2829.11.00.00
Of sodium
Base rate: FreeSource retrieved: 2026-06-15
2829.90.05.00
Potassium bromate
Base rate: FreeSource retrieved: 2026-06-15
2829.90.25.00
Sodium bromate
Base rate: FreeSource retrieved: 2026-06-15