Guide to HSN Chapter 28

2801

Fluorine, chlorine, bromine and iodine

2802

Sulphur, sublimed or precipitated;colloidal sulphur

2803

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

2804

Hydrogen, rare gases and other non-metals

2805

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

2806

Hydrogen chloride (hydrochloric acid);chlorosulphuric acid

2807

Sulphuric acid; oleum

2808

Nitric acid; sulphonitric acids

2809

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

2810

Oxides of boron; boric acids

2811

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

2812

Halides and halide oxides of non-metals

2813

Sulphides of non-metals; commercial phosphorus trisulphide

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

2817

Zinc oxide; zinc peroxide

2818

Artificial corundum, whether or not chemically defined;aluminium oxide; aluminium hydroxide

2819

Chromium oxides and hydroxides

2820

Manganese oxides

2821

Iron oxides and hydroxides; earth colours containing 70% or more by weight of combined iron evaluated as fe2o3

2822

Cobalt oxides and hydroxides;commercial cobalt oxides

2823

Titanium oxides

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 hypochlorites; chlorites; hypobromites

2829

Chlorates and perchlorates; bromates and perbromates; iodates and periodates

2830

Sulphides; polysulphides, whether or not chemically defined

2831

Dithionites and sulphoxylates

2832

Sulphites; thiosulphates

2833

Sulphates; alums; peroxosulphates (persulphates)

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

2847

Hydrogen peroxide, whether or not solidified with urea

2849

Carbides, whether or not chemically defined

2850

Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined,other than compounds which are also carbides of heading 2849

2852

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

2853

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