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HS 28 Chapter · Chemicals & Allied Industries

Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes

Chapter 28 of the Harmonised System covers Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes. It groups 50 four-digit headings used worldwide to classify these goods for customs and duty.

Sourcing this category from India

Products classified under HS 28 can be sourced from India across a range of clusters and price points. Use this page to understand where Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes sits in the tariff schedule, then explore the Indian sectors and products that supply it.

How to read this code

28 is the two-digit HS chapter. Your destination country extends it to 8–10 digits and assigns the duty rate. India's preferential trade agreements (UAE CEPA, Australia ECTA, and others) can reduce or zero out that duty for many goods — check our import guides for your market.

Headings under HS 28

The Harmonised System breaks Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes into these 50 headings. Drill down to the exact classification for your goods.

28.01 3 subheadings

Fluorine, chlorine, bromine and iodine

28.02 1 subheadings

Sulphur; sublimed or precipitated, colloidal sulphur

28.03 1 subheadings

Carbon; carbon blacks and other forms of carbon n.e.c.

28.04 11 subheadings

Hydrogen, rare gases and other non-metals

28.05 5 subheadings

Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury

28.06 2 subheadings

Hydrogen chloride (hydrochloric acid); chlorosulphuric acid

28.07 1 subheadings

Sulphuric acid; oleum

28.08 1 subheadings

Nitric acid; sulphonitric acids

28.09 2 subheadings

Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined

28.10 1 subheadings

Oxides of boron; boric acids

28.11 6 subheadings

Inorganic acids and other inorganic oxygen compounds of non-metals; n.e.c. in heading no. 2806 to 2810

28.12 9 subheadings

Halides and halide oxides of non-metals

28.13 2 subheadings

Sulphides of non-metals; commercial phosphorus trisulphide

28.14 2 subheadings

Ammonia; anhydrous or in aqueous solution

28.15 4 subheadings

Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash) peroxides of sodium or potassium

28.16 2 subheadings

Hydroxide and peroxide of magnesium; oxides, hydroxides and peroxides of strontium or barium

28.17 1 subheadings

Zinc; oxide and peroxide

28.18 3 subheadings

Aluminium oxide (including artificial corundum); aluminium hydroxide

28.19 2 subheadings

Chromium oxides and hydroxides

28.20 2 subheadings

Manganese oxides

28.21 2 subheadings

Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2o3

28.22 1 subheadings

Cobalt oxides and hydroxides; commercial cobalt oxides

28.23 1 subheadings

Titanium oxides

28.24 2 subheadings

Lead oxides; red lead and orange lead

28.25 9 subheadings

Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides

28.26 4 subheadings

Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts

28.27 11 subheadings

Chlorides; chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides

28.28 2 subheadings

Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites

28.29 3 subheadings

Chlorates and perchlorates; bromates and perbromates; iodates and periodates

28.30 2 subheadings

Sulphides; polysulphides whether or not chemically defined

28.31 2 subheadings

Dithionites and sulphoxylates

28.32 3 subheadings

Sulphites; thiosulphates

28.33 10 subheadings

Sulphates; alums; peroxosulphates (persulphates)

28.34 3 subheadings

Nitrites; nitrates

28.35 8 subheadings

Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and polyphosphates, whether or not chemically defined

28.36 8 subheadings

Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate

28.37 3 subheadings

Cyanides, cyanide oxides and complex cyanides

28.39 3 subheadings

Silicates; commercial alkali metal silicates

28.40 4 subheadings

Borates; peroxoborates (perborates)

28.41 7 subheadings

Salts of oxometallic or peroxometallic acids

28.42 2 subheadings

Salts of inorganic acids or peroxoacids, n.e.c. including aluminosilicates whether or not chemically defined, but excluding azides

28.43 5 subheadings

Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals

28.44 8 subheadings

Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes); and their compounds; mixtures and residues containing these products

28.45 5 subheadings

Isotopes other than those of heading no. 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined

28.46 2 subheadings

Compounds, inorganic or organic, of rare-earth metals; of yttrium or of scandium or of mixtures of these metals

28.47 1 subheadings

Hydrogen peroxide; whether or not solidified with urea

28.49 3 subheadings

Carbides, whether or not chemically defined

28.50 1 subheadings

Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading no. 2849

28.52 2 subheadings

Inorganic or organic compounds of mercury, excluding amalgams, whether or not chemically defined

28.53 2 subheadings

Phosphides, chemically defined or not, not ferrophosphorus; other inorganic compounds n.e.c. (including distilled, conductivity water and water of like purity); liquid air, rare gases removed or not; compressed air; amalgams, not precious metal amalgams

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Last updated 28 Jun 2026 Figures are indicative sourcing benchmarks compiled from exporter quotes, India trade-scheme notifications and public customs tariffs. Confirm live pricing and HS classification before contracting.
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