VOL. I · WASHINGTON TARIFF DECISION ASSISTANT · April 25, 2026
§ HARMONIZED TARIFF SCHEDULE · CHAPTER 28

Inorganic chemicals.

This chapter covers 28 — Inorganic chemicals.

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HEADINGS
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Section 301 attached
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§ §301 OVERLAY · ACTIVE This chapter has roughly 40 heading(s) tied to USTR Section 301 rules (9903.88.x series), affecting goods of China origin.

§ I · OVERVIEWWhat this chapter covers

This chapter covers 28 — Inorganic chemicals.

Products of the chemical and allied industries — inorganic and organic chemicals, pharmaceuticals, fertilizers, dyes, cosmetics, soaps, photographic goods, and miscellaneous chemicals.

§ II · RATE TABLEColumn rates by heading

The table below lists every 4-digit heading under this chapter from the current snapshot. Click a code to drill in for sub-lines, Chapter 99 overlays, and Federal Register history.

CODE DESCRIPTION GENERAL SPECIAL COL. 2
2801 Fluorine, chlorine, bromine and iodine:
2804 Hydrogen, rare gases and other nonmetals:
2805 Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury:
2806 Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid:
2809 Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined:
2811 Other inorganic acids and other inorganic oxygen compounds of nonmetals:
2812 Halides and halide oxides of nonmetals:
2813 Sulfides of nonmetals; commercial phosphorus trisulfide:
2814 Ammonia, anhydrous or in aqueous solution:
2815 Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium:
2816 Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides, of strontium or barium:
2818 Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide:
2819 Chromium oxides and hydroxides:
2820 Manganese oxides:
2821 Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3:
2824 Lead oxides; red lead and orange lead:
2825 Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides:
2826 Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts:
2827 Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides:
2828 Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites:
2829 Chlorates and perchlorates; bromates and perbromates; iodates and periodates:
2830 Sulfides; polysulfides, whether or not chemically defined:
2831 Dithionites and sulfoxylates:
2832 Sulfites; thiosulfates:
2833 Sulfates; alums; peroxosulfates (persulfates):
2834 Nitrites; nitrates:
2835 Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined:
2836 Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate:
2837 Cyanides, cyanide oxides and complex cyanides:
2839 Silicates; commercial alkali metal silicates:
2840 Borates; peroxoborates (perborates):
2841 Salts of oxometallic or peroxometallic acids:
2842 Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides:
2843 Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals:
2844 Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products:
2845 Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined:
2846 Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals:
2849 Carbides, whether or not chemically defined:
2852 Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams:
2853 Phosphides, 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:

§ III · POLICY TIMELINERecent Federal Register notices affecting this chapter

Recent Federal Register notices that touch this chapter. For the complete cross-chapter feed, visit the Changes page.

No Federal Register documents in the current snapshot affect this chapter.