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Chapter 28

Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopesChemical elementsInorganic acids and inorganic oxygen compounds of non-metalsHalogen or sulphur compounds of non-metalsInorganic bases and oxides, hydroxides and peroxides of metalsSalts and peroxysalts, of inorganic acids and metalsMiscellaneous

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Note al capitolo (8)
1. 1. Except where the context otherwise requires, the headings of this Chapter apply only to: • (a) Separate chemical elements and separate chemically defined compounds, whether or not containing impurities; • (b) The products mentioned in (a) above dissolved in water; • (c) The products mentioned in (a) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and...
2. 2. In addition to dithionites and sulphoxylates, stabilised with organic substances (heading 28.31), carbonates and peroxocarbonates of inorganic bases (heading 28.36), cyanides, cyanide oxides and complex cyanides of inorganic bases (heading 28.37), fulminates, cyanates and thiocyanates, of inorganic bases (heading 28.42), organic products included in headings 28.43 to 28.46 and 28.52 and carbides (heading 28.49), only the following compounds of carbon are to be classified in this Chapter:...
3. 3. Subject to the provisions of Note 1 to Section VI, this Chapter does not cover: • (a) Sodium chloride or magnesium oxide, whether or not pure, or other products of Section V; • (b) Organo-inorganic compounds other than those mentioned in Note 2 above; • (c) Products mentioned in Note 2, 3, 4 or 5 to Chapter 31; • (d) Inorganic products of a kind used as luminophores, of heading 32.06; glass frit and other glass in the form of powder, granules or flakes, of heading 32.07; • (e) Artificial...
4. 4. Chemically defined complex acids consisting of a non-metal acid of sub-Chapter II and a metal acid of sub-Chapter IV are to be classified in heading 28.11.
5. 5. Headings 28.26 to 28.42 apply only to metal or ammonium salts or peroxysalts. Except where the context otherwise requires, double or complex salts are to be classified in heading 28.42.
6. 6. Heading 28.44 applies only to: • (a) Technetium (atomic No. 43), promethium (atomic No. 61), polonium (atomic No. 84) and all elements with an atomic number greater than 84; • (b) Natural or artificial radioactive isotopes (including those of the precious metals or of the base metals of Sections XIV and XV), whether or not mixed together; • (c) Compounds, inorganic or organic, of these elements or isotopes, whether or not chemically defined, whether or not mixed together; • (d) Alloys,...
7. 7. Heading 28.53 includes copper phosphide (phosphor copper) containing more than 15% by weight of phosphorus.
8. 8. Chemical elements (for example, silicon and selenium) doped for use in electronics are to be classified in this Chapter, provided that they are in forms unworked as drawn, or in the form of cylinders or rods. When cut in the form of discs, wafers or similar forms, they fall in heading 38.18.
2801

Fluorine, chlorine, bromine and iodine.

3 subheadings · 3 tariff items
2802

Sulphur, sublimed or precipitated; colloidal sulphur.

1 subheadings · 1 tariff items
2803

Carbon (carbon blacks and other forms of carbon not elsewhere specified or included).

1 subheadings · 2 tariff items
2804

Hydrogen, rare gases and other non-metals.

11 subheadings · 12 tariff items
2805

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

5 subheadings · 5 tariff items
2806

Hydrogen chloride (hydrochloric acid); chlorosulphuric acid.

2 subheadings · 2 tariff items
2807

Sulphuric acid; oleum.

1 subheadings · 1 tariff items
2808

Nitric acid; sulphonitric acids.

1 subheadings · 1 tariff items
2809

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

2 subheadings · 5 tariff items
2810

Oxides of boron; boric acids.

1 subheadings · 1 tariff items
2811

Other inorganic acids and other inorganic oxygen compounds of non-metals.

6 subheadings · 8 tariff items
2812

Halides and halide oxides of non-metals.

9 subheadings · 10 tariff items
2813

Sulphides of non-metals; commercial phosphorus trisulphide.

2 subheadings · 2 tariff items
2814

Ammonia, anhydrous or in aqueous solution.

2 subheadings · 2 tariff items
2815

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

4 subheadings · 5 tariff items
2816

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

2 subheadings · 2 tariff items
2817

Zinc oxide; zinc peroxide.

1 subheadings · 2 tariff items
2818

Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide.

3 subheadings · 5 tariff items
2819

Chromium oxides and hydroxides.

2 subheadings · 2 tariff items
2820

Manganese oxides.

2 subheadings · 2 tariff items
2821

Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as Fe2O3.

2 subheadings · 2 tariff items
2822

Cobalt oxides and hydroxides; commercial cobalt oxides.

1 subheadings · 1 tariff items
2823

Titanium oxides.

1 subheadings · 2 tariff items
2824

Lead oxides; red lead and orange lead.

2 subheadings · 2 tariff items
2825

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

9 subheadings · 10 tariff items
2826

Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts.

4 subheadings · 4 tariff items
2827

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

11 subheadings · 12 tariff items
2828

Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites.

2 subheadings · 2 tariff items
2829

Chlorates and perchlorates; bromates and perbromates; iodates and periodates.

3 subheadings · 3 tariff items
2830

Sulphides; polysulphides, whether or not chemically defined.

2 subheadings · 2 tariff items
2831

Dithionites and sulphoxylates.

2 subheadings · 2 tariff items
2832

Sulphites; thiosulphates.

3 subheadings · 3 tariff items
2833

Sulphates; alums; peroxosulphates (persulphates).

10 subheadings · 14 tariff items
2834

Nitrites; nitrates.

3 subheadings · 3 tariff items
2835

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

8 subheadings · 10 tariff items
2836

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

8 subheadings · 9 tariff items
2837

Cyanides, cyanide oxides and complex cyanides.

3 subheadings · 3 tariff items
2839

Silicates; commercial alkali metal silicates.

3 subheadings · 3 tariff items
2840

Borates; peroxoborates (perborates).

4 subheadings · 4 tariff items
2841

Salts of oxometallic or peroxometallic acids.

7 subheadings · 7 tariff items
2842

Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides.

2 subheadings · 2 tariff items
2843

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

5 subheadings · 5 tariff items
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.

8 subheadings · 10 tariff items
2845

Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined.

5 subheadings · 5 tariff items
2846

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

2 subheadings · 2 tariff items
2847

Hydrogen peroxide, whether or not solidified with urea.

1 subheadings · 2 tariff items
2849

Carbides, whether or not chemically defined.

3 subheadings · 4 tariff items
2850

Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49.

1 subheadings · 1 tariff items
2852

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

2 subheadings · 3 tariff items
2853

Phosphides, whether or not chemically defined, excluding ferrophosphorus; 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.

2 subheadings · 2 tariff items

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