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Tariff number Chapter 28, Section 40

2801
I. CHEMICAL ELEMENTS

2801
Fluorine; bromine

2804
Rare gases

2804
Other

2804
Boron; tellurium

2804
Silicon

2804
Phosphorus

2805
Alkali or alkaline-earth metals

2805
Other

2805
Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed

2805
Mercury

2806
II. INORGANIC ACIDS AND INORGANIC OXYGEN COMPOUNDS OF NON-METALS

2810
Oxides of boron; boric acids

2811
Other inorganic acids

2811
Other

2811
Other inorganic oxygen compounds of non-metals

2811
Other

2812
III. HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS

2812
Chlorides and chloride oxides

2812
Other

2813
Other

2814
IV. INORGANIC BASES AND OXIDES, HYDROXIDES AND PEROXIDES OF METALS

2815
Sodium hydroxide (caustic soda)

2818
Artificial corundum, whether or not chemically defined

2819
Other

2820
Other

2825
Other

2826
V. SALTS AND PEROXYSALTS, OF INORGANIC ACIDS AND METALS

2826
Fluorides

2826
Other

2826
Other

2827
Other chlorides

2827
Other

2827
Chloride oxides and chloride hydroxides

2827
Other

2827
Bromides and bromide oxides

2829
Chlorates

2829
Other

2830
Other

2833
Sodium sulphates

2833
Other sulphates

2833
Other

2834
Nitrates

2834
Other

2835
Phosphates

2835
Other

2835
Polyphosphates

2836
Other

2836
Other

2837
Cyanides and cyanide oxides

2839
Of sodium

2840
Disodium tetraborate (refined borax)

2840
Other

2840
Other borates

2841
Manganites, manganates and permanganates

2841
Other

2842
Other

2843
VI. MISCELLANEOUS

2843
Colloidal precious metals

2843
Silver compounds

2843
Other compounds; amalgams

2844
Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds

2844
Uranium enriched in U 235 and its compounds; plutonium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U 235, plutonium or compounds of these products

2844
Uranium depleted in U 235 and its compounds; thorium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium depleted in U 235, thorium or compounds of these products

2844
Radioactive elements and isotopes and compounds other than those of subheading 2844 10, 2844 20 or 2844 30; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues

2844
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
Other radioactive elements and isotopes and compounds; other alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds

2845
Other

2846
Other

2849
Other

2850
Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849

2853
Other