Chapter 28: Inorganic chemicals and compounds

2830.10.00.00

Sodium sulfides

2830.90.10.00

Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight

Base rate: 2.8%Source retrieved: 2026-06-15

2830.90.15.00

Other zinc sulfide

2830.90.20.00

Cadmium sulfide

2831.10.10.00

Sodium formaldehyde sulfoxylate

2832.10.00.00

Sodium sulfites

2832.20.00.00

Other sulfites

2832.30.10.00

Sodium thiosulfate

2833.11.10.00

Salt cake

2833.21.00.00

Of magnesium

2833.22.00.00

Of aluminum

Base rate: 3.2%Source retrieved: 2026-06-15

2833.24.00.00

Of nickel

2833.25.00.00

Of copper

Base rate: 0.6%Source retrieved: 2026-06-15

2833.27.00.00

Of barium

2833.29.10.00

Of cobalt

2833.29.30.00

Of vanadium

2833.29.40.00

Of chromium

2833.40.20.00

Of sodium

2834.10.10.00

Of sodium

2834.21.00.00

Of potassium

2834.29.05.00

Of bismuth

2834.29.10.00

Of calcium

2834.29.20.00

Of strontium

2835.10.00.00

Phosphinates (hypophosphites) and phosphonates (phosphites)

2835.22.00.00

Of mono- or disodium

2835.24.00.00

Of potassium

2835.25.00.00

Calcium hydrogenorthophosphate ("Dicalcium phosphate")

2835.26.00.00

Other phosphates of calcium

2835.29.10.00

Of aluminum

2835.29.20.00

Of triammonium

Base rate: 2.2%Source retrieved: 2026-06-15

2835.29.30.00

Of trisodium

2835.31.00.00

Sodium triphosphate (Sodium tripolyphosphate)

2835.39.10.00

Of potassium

Base rate: 1.2%Source retrieved: 2026-06-15

2836.20.00.00

Disodium carbonate

2836.30.00.00

Sodium hydrogencarbonate (Sodium bicarbonate)

Base rate: 1.9%Source retrieved: 2026-06-15

2836.40.10.00

Dipotassium carbonate

2836.40.20.00

Potassium hydrogencarbonate (Potassium bicarbonate)

Base rate: 1.3%Source retrieved: 2026-06-15

2836.50.00.00

Calcium carbonate

Base rate: 2.3%Source retrieved: 2026-06-15

2836.60.00.00

Barium carbonate

2836.91.00

Lithium carbonates

2836.92.00.00

Strontium carbonate

2836.99.10.00

Cobalt carbonates

2836.99.20.00

Bismuth carbonate

Base rate: 1.7%Source retrieved: 2026-06-15

2836.99.30.00

Commercial ammonium carbonate and other ammonium carbonates

2836.99.40.00

Lead carbonates

Base rate: 0.5%Source retrieved: 2026-06-15

2837.11.00.00

Of sodium

Base rate: 1.1%Source retrieved: 2026-06-15

2837.20.10.00

Potassium ferricyanide

2839.11.00.00

Sodium metasilicates

Base rate: 1.1%Source retrieved: 2026-06-15

2839.90.10.00

Of potassium

Base rate: 0.3%Source retrieved: 2026-06-15

2840.11.00.00

Anhydrous

2840.20.00.00

Other borates

2840.30.00

Peroxoborates (perborates)

Base rate: 2.4%Source retrieved: 2026-06-15

2841.30.00.00

Sodium dichromate

2841.50.10.00

Potassium dichromate

Base rate: 5%Source retrieved: 2026-06-15

2841.61.00.00

Potassium permanganate

2841.70.10.00

Of ammonium

Base rate: 4.3%Source retrieved: 2026-06-15

2841.80.00

Tungstates (wolframates)

2841.90.10.00

Vanadates

2841.90.20.00

Ammonium perrhenate

2841.90.30.00

Potassium stannate

2841.90.40.00

Aluminates

2841.90.45.00

Chromates of zinc or of lead

2842.10.00.00

Double or complex silicates, including aluminosilicates whether or not chemically defined

2842.90.10.00

Fulminates, cyanates and thiocyanates

2843.10.00.00

Colloidal precious metals

2843.21.00.00

Silver nitrate

Base rate: 5%Source retrieved: 2026-06-15

2843.30.00.00

Gold compounds

2843.90.00.00

Other compounds; amalgams

Base rate: 5%Source retrieved: 2026-06-15

2844.10.10.00

Uranium metal

2844.10.20

Uranium compounds

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

2844.30.10.00

Thorium compounds

2844.30.20

Uranium compounds

2844.41.00.00

Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds

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

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

2844.44.00.00

Radioactive residues

2844.50.00.00

Spent (irradiated) fuel elements (cartridges) of nuclear reactors

2845.10.00.00

Heavy water (Deuterium oxide)

2845.20.00.00

Boron enriched in boron-10 and its compounds

2845.30.00.00

Lithium enriched in lithium-6 and its compounds

2845.40.00.00

Helium-3

2846.10.00

Cerium compounds

2846.90.20

Mixtures of rare-earth oxides or of rare-earth chlorides

2846.90.40.00

Yttrium bearing materials and compounds containing by weight more than 19 percent but less than 85 percent yttrium oxide equivalent

2847.00.00.00

Hydrogen peroxide, whether or not solidified with urea

Base rate: 1.8%Source retrieved: 2026-06-15

2849.10.00.00

Of calcium

2849.20.20.00

In grains, or ground, pulverized or refined

Base rate: 0.5%Source retrieved: 2026-06-15

2849.90.10.00

Of boron

2849.90.20.00

Of chromium

2849.90.30.00

Of tungsten

2850.00.05.00

Of calcium

Base rate: 4.9%Source retrieved: 2026-06-15

2850.00.07.00

Of titanium

2850.00.10.00

Of tungsten

2850.00.20.00

Of vanadium

2852.10.10.00

Mercuric oxide, mercuric cyanide, mercuric oxycyanide and mercuric potassium cyanide

2852.90.05.00

Albuminates, tannates and phosphides of mercury