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HSN Codes and GST Rates of Chapter 28

Inorganic chemicals, organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

HSN Code HSN Description GST Rate

Chapter 28

 		Inorganic chemicals, organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

I . CHEMICAL ELEMENTS

2801

 		FLUORINE , CHLORINE, BROMINE AND IODINE

28011000

 		- Chlorine

28012000

 		- Iodine

280130

 		- Fluorine; bromine :

28013010

 		--- Fluorine

28013020

 		--- Bromine

2802

 		SULPHUR, SUBLIMED OR PRECIPITATED; COLLOIDAL SULPHUR

280200

 		- Sulphur, sublimed or precipitated; colloidal sulphur :

28020010

 		--- Sublimed sulphur

28020020

 		--- Precipitated sulphur

28020030

 		--- Colloidal sulphur

2803

 		CARBON (CARBON BLACKS AND OTHER FORMSOF CARBON NOT ELSEWHERE SPECIFIED OR INCLUDED)

280300

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

28030010

 		--- Carbon blacks

28030020

 		--- Acetylene black

28030090

 		--- Other

2804

 		HYDROGEN, RARE GASES AND OTHER NON-METALS

28041000

 		- Hydrogen

- Rare gases :

28042100

 		-- Argon

280429

 		-- Other :

28042910

 		--- Helium

28042990

 		--- Other

28043000

 		- Nitrogen

280440

 		- Oxygen :

28044010

 		--- Medicinal grade

28044090

 		--- Other

280450

 		- Boron; tellurium

28045010

 		--- Boron

28045020

 		--- Tellurium

- Silicon :

28046100

 		-- Containing by weight not less than 99.99% of silicon

28046900

 		-- Other

280470

 		- Phosphorus :

28047010

 		--- Phosphorus, black

28047020

 		--- Phosphorus, red

28047030

 		--- Phosphorus, white or yellow

28048000

 		- Arsenic

28049000

 		- Selenium

2805

 		ALKALI OR ALKALINE -EARTH METALS; RARE-EARTH METALS, SCANDIUM AND YTTRIUM, WHETHER OR NOT INTERMIXED OR INTERALLOYED ; MERCURY

- Alkali or alkaline-earth metals :

28051100

 		-- Sodium

28051200

 		-- Calcium

28051900

 		-- Other

28053000

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

28054000

 		- Mercury

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

2806

 		HYDROGEN CHLORIDE (HYDROCHLORIC ACID); CHLOROSULPHURICACID

28061000

 		- Hydrogen chloride (hydrochloric acid)

28062000

 		- Chlorosulphuric acid

2807

 		- SULPHURIC ACID; OLEUM

280700

 		Sulphuric acid; oleum :

28070010

 		--- Sulphuric acid

28070020

 		--- Oleum

2808

 		NITRIC ACID; SULPHONITRIC ACIDS

280800

 		- Nitric acid; sulphonitric acids :

28080010

 		--- Nitric acid

28080020

 		--- Sulphonitric acids

2809

 		DIPHOSPHORUS PENTAOXIDE; PHOSPHORIC ACID; POLYPHOSPHORIC ACIDS, WHETHER OR NOT CHEMICALLY DEFINED

28091000

 		- Diphosphorus pentaoxide

280920

 		- Phosphoric acid and polyphosphoric acids :

28092010

 		--- Phosporic acid

28092020

 		--- Polyphosphoric acids

2810

 		OXIDES OF BORON; BORIC ACIDS

- Oxides of boron; boric acids :

28100010

 		--- Oxides of boron

28100020

 		--- Boric acids

2811

 		OTHER INORGANIC ACIDS AND OTHER INORGANIC OXYGEN COMPOUNDS OF NON-METALS

- Other inorganic acids :

28111100

 		-- Hydrogen fluoride (hydrofluoric acid)

28111200

 		-- Hydrogen cyanide (hydrocyanic acid)

281119

 		-- Other :

28111920

 		--- Hypophosphorus acid (phosphinic acid)

28111930

 		--- Acids of arsenic

28111940

 		--- Sulphonic acid

28111990

 		--- Other

- Other inorganic oxygen compounds of non-metals :

281121

 		-- Carbon dioxide :

28112110

 		--- Dry ice

28112190

 		--- Other

28112200

 		-- Silicon dioxide

281129

 		-- Other :

28112910

 		--- Arsenic pentaoxide

28112920

 		--- Arsenic trioxide

28112930

 		--- Nitrous oxide

28112940

 		--- Carbon monoxide

28112950

 		--- Sulphur trioxide (sulphuric anhydride)

28112990

 		--- Other

III. HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS

2812

 		HALIDES AND HALIDE OXIDES OF NON-METALS

- Chlorides and chloride oxides :

28121100

 		-- Carbonyl dichloride (phosgene)

28121200

 		-- Phosphorous oxychloride

28121300

 		-- Phosphorus trichloride

28121400

 		-- Phosphorous pentachloride

28121500

 		-- Sulphur monochloride

28121600

 		-- Sulphur dichloride

28121700

 		-- Thionyl chloride

281219

 		-- Other:

28121910

 		--- Sulpur oxychloride

28121920

 		--- Silicon tetrachloride

28121930

 		--- Arsenic trichloride

28121990

 		--- Other

28129000

 		- Other

2813

 		SULPHIDES OF NON-METALS ; COMMERCIAL PHOSPHORUS TRISULPHIDE

28131000

 		- Carbon disulphide

281390

 		- Other :

28139010

 		--- Arsenic disulphide (artificial)

28139020

 		--- Commercial phosphorus trisulphide

28139030

 		--- Lime sulphur

28139090

 		--- Other

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

2814

 		AMMONIA, ANHYDROUS OR IN AQUEOUS SOLUTION

28141000

 		- Anhydrous ammonia

28142000

 		- Ammonia in aqueous solution

2815

 		SODIUM HYDROXIDE (CAUSTIC SODA ); POTASSIUM HYDROXIDE (CAUSTIC POTASH); PEROXIDES OF SODIUM OR POTASSIUM

- Sodium hydroxide (caustic soda) :

281511

 		-- Solid :

28151110

 		--- Flakes

28151190

 		--- Other

28151200

 		-- In aqueous solution (soda lye or liquid soda)

28152000

 		- Potassium hydroxide (caustic potash)

28153000

 		- Peroxides of sodium or potassium

2816

 		HYDROXIDE AND PEROXIDE OF MAGNESIUM; OXIDES , HYDROXIDES AND PEROXIDES, OF STRONTIUM OR BARIUM

281610

 		- Hydroxide and peroxide of magnesium :

28161010

 		--- Hydroxide of magnesium

28161020

 		--- Peroxide of magnesium

28164000

 		- Oxides, hydroxides and peroxides,of strontium or barium

2817

 		ZINC OXIDE; ZINC PEROXIDE

281700

 		- Zinc oxide; zinc peroxide :

28170010

 		--- Zinc oxide

28170020

 		--- Zinc peroxide

2818

 		ARTIFICIAL CORUNDUM, WHETHER OR NOT CHEMICALLY DEFINED; ALUMINIUM OXIDE ; ALUMINIUM HYDROXIDE

28181000

 		- Artificial corundum, whether or not chemically defined

281820

 		- Aluminium oxide, other than artificial corundum :

--- Alumina, calcined:

28182011

 		--- Metallurgical grade, conforming to IS 17441

28182019

 		--- Non-metallurgical grade, conforming to IS 17441

28182090

 		--- Other

28183000

 		- Aluminium hydroxide

2819

 		CHROMIUM OXIDES AND HYDROXIDES

28191000

 		- Chromium trioxide

28199000

 		- Other

2820

 		MANGANESE OXIDES

28201000

 		- Manganese dioxide

28209000

 		- Other

2821

 		IRON OXIDES AND HYDROXIDES; EARTH COLOURS CONTAINING 70% OR MORE BY WEIGHT OF COMBINED IRON EVALUATED AS Fe2O3

282110

 		- Iron oxides and hydroxides :

28211010

 		--- Iron oxides

28211020

 		--- Iron hydroxides

28212000

 		- Earth colours

2822

 		COBALT OXIDES AND HYDROXIDES; COMMERCIAL COBALT OXIDES

282200

 		- Cobalt oxides and hydroxides; commercial cobalt oxides :

28220010

 		--- Cobalt oxides

28220020

 		--- Cobalt hydroxides

28220030

 		--- Commercial cobalt oxides

2823

 		TITANIUM OXIDES

282300

 		- Titanium oxides :

28230010

 		--- Titanium dioxide

28230090

 		--- Other

2824

 		LEAD OXIDES; RED LEAD AND ORANGE LEAD

282410

 		- Lead monoxide (litharge, massicot) :

28241010

 		--- Litharge

28241020

 		--- Massicot

28249000

 		- Other

2825

 		HYDRAZINE AND HYDROXYLAMINE AND THEIR INORGANIC SALTS; OTHER INORGANIC BASES ; OTHER METAL OXIDES, HYDROXIDES AND PEROXIDES

282510

 		- Hydrazine and hydroxylamine and their inorganic salts :

28251010

 		--- Hydrazine anhydrous

28251020

 		--- Hydrazine hydrate

28251030

 		--- Hydrazine sulphate

28251040

 		--- Hydroxylamine sulphate

28251090

 		--- Other

28252000

 		- Lithium oxide and hydroxide

282530

 		- Vanadium oxides and hydroxides :

28253010

 		--- Vanadium pentaoxide flakes

28253090

 		--- Other

28254000

 		- Nickel oxides and hydroxides

28255000

 		- Copper oxides and hydroxides

282560

 		- Germanium oxides and zirconium dioxide :

28256010

 		--- Germanium oxides

28256020

 		--- Zirconium dioxide

282570

 		- Molybdenum oxides and hydroxides :

28257010

 		--- Molybdenum trioxide

28257020

 		--- Molybdic acid

28257090

 		--- Other

28258000

 		- Antimony oxides

282590

 		- Other :

28259010

 		--- Tin oxide

28259020

 		--- Cadmium oxide

28259030

 		[****]

28259040

 		--- Calcium hydroxide

28259050

 		--- Ammonium hydroxide

28259090

 		--- Other

V. SALTS AND PEROXYSALTS, OF INORGANICACIDS AND METALS

2826

 		FLUORIDES; FLUOROSILICATES, FLUOROALUMINATES AND OTHER COMPLEX FLUORINE SALTS

- Fluorides :

28261200

 		-- Of aluminium

282619

 		-- Other :

28261910

 		--- Magnesium fluoride

28261990

 		--- Other

28263000

 		- Sodium hexafluoroaluminate (synthetic cryolite)

28269000

 		- Other

2827

 		CHLORIDES, CHLORIDE OXIDES AND CHLORIDE HYDROXIDES; BROMIDES AND BROMIDE OXIDES; IODIDES AND IODIDE OXIDES

28271000

 		- Ammonium chloride

28272000

 		- Calcium chloride

- Other chlorides :

28273100

 		-- Of magnesium

28273200

 		-- Of aluminium

28273500

 		-- Of nickel

282739

 		-- Other :

28273910

 		[****]

28273920

 		--- Mercurous chloride

28273930

 		--- Strontium chloride

28273940

 		--- Cuprous chloride

28273990

 		--- Other

- Chloride oxides and chloride hydroxides :

282741

 		-- Of copper :

28274110

 		--- Copper oxychloride

28274190

 		--- Other

28274900

 		-- Other

- Bromides and bromide oxides :

282751

 		-- Bromides of sodium or of potassium :

28275110

 		--- Bromides of sodium

28275120

 		--- Bromides of potassium

282759

 		-- Other :

28275910

 		--- Magnesium bromide

28275990

 		--- Other

282760

 		- Iodides and iodide oxides :

28276010

 		--- Potassium iodide

28276020

 		--- Sodium iodide

28276090

 		--- Other

2828

 		HYPOCHLORITES; COMMERCIAL CALCIUM HYPOCHLORITES; CHLORITES; HYPOBROMITES

282810

 		- Commercial calcium hypochlorite and othercalcium hypochlorites :

28281010

 		--- Commercial calcium hypochlorite (bleaching paste or powder)

28281090

 		--- Other

282890

 		- Other :

--- Sodium hypochlorites :

28289011

 		---- Bleaching paste or powder

28289019

 		---- Other

28289020

 		--- Potassium hypochlorites

28289030

 		--- Sodium chlorite

28289040

 		--- Aluminium chlorite

28289050

 		--- Hypobromites

28289060

 		--- Bleaching paste or powder of other hypochlorites

28289090

 		--- Other

2829

 		CHLORATES AND PERCHLORATES; BROMATES AND PERBROMATES; IODATES AND PERIODATES

- Chlorates :

28291100

 		-- Of sodium

282919

 		-- Other :

28291910

 		--- Barium chlorate

28291920

 		--- Potassium chlorate

28291930

 		--- Magnesium chlorate

28291990

 		--- Other

282990

 		- Other :

28299010

 		--- Perchlorates

28299020

 		--- Bromates and perbromates

28299030

 		--- Iodates and periodates

2830

 		SULPHIDES; POLYSULPHIDES , WHETHER OR NOT CHEMICALLY DEFINED

28301000

 		- Sodium sulphides

283090

 		- Other :

28309010

 		--- Sulphides

28309020

 		--- Polysulphides

2831

 		DITHIONITES AND SULPHOXYLATES

283110

 		- Of sodium :

28311010

 		--- Sodium dithionites (sodium hydrosulphite)

28311020

 		--- Sodium sulphoxylates (including sodium formaldehyde sulphoxylate)

283190

 		- Other :

28319010

 		--- Dithionites

28319020

 		--- Sulphoxylates

2832

 		SULPHITES; THIOSULPHATES

283210

 		- Sodium sulphites :

28321010

 		--- Sodium bisulphite

28321020

 		--- Sodium hydrosulphite

28321090

 		--- Other

283220

 		- Other sulphites :

28322010

 		--- Potassium metabisulphite

28322020

 		--- Magnesium sulphite

28322090

 		--- Other

283230

 		- Thiosulphates :

28323010

 		--- Sodium thiosulphate (hypo)

28323020

 		--- Magnesium thiosulphate

28323090

 		--- Other

2833

 		SULPHATES ; ALUMS ; PEROXOSULPHATES (PERSULPHATES)

- Sodium sulphates :

28331100

 		-- Disodium sulphate

283319

 		-- Other :

28331910

 		--- Sodium hydrogen sulphate (acid sulphate)

28331920

 		--- Sodium pyrosulphate

28331990

 		--- Other

- Other sulphates :

28332100

 		-- Of magnesium

283322

 		-- Of aluminium :

28332210

 		--- Aluminium sulphate (iron free)

28332290

 		--- Other

28332400

 		-- Of nickel

28332500

 		-- Of copper

28332700

 		-- Of barium

283329

 		-- Other :

28332910

 		--- Ferrous sulphate

28332920

 		[****]

28332930

 		--- Quinidine sulphate

28332940

 		--- Manganese sulphate

28332950

 		--- Strontium sulphate

28332990

 		--- Other

283330

 		- Alums :

28333010

 		--- Ammonium alum

28333020

 		--- Ferric ammonium alum

28333030

 		--- Potash alum

28333090

 		--- Other

28334000

 		- Peroxosulphates (persulphates)

2834

 		NITRITES; NITRATES

283410

 		- Nitrites :

28341010

 		--- Sodium nitrite

28341090

 		--- Other

- Nitrates :

28342100

 		-- Of potassium

283429

 		-- Other :

28342910

 		--- Strontium nitrate

28342920

 		--- Magnesium nitrate

28342930

 		--- Barium nitrate

28342990

 		--- Other

2835

 		PHOSPHINATES (HYPOPHOSPHITES), PHOSPHONATES (PHOSPHITES) AND PHOSPHATES; POLYPHOSPHATES, WHETHER OR NOT CHEMICALLY DEFINED

283510

 		- Phosphinates (hypophosphites) and Phosphonates (phosphites) :

28351010

 		--- Calcium hypophosphite

28351020

 		--- Magnesium hypophosphite

28351090

 		--- Other

- Phosphates :

28352200

 		-- Of mono-or disodium

28352400

 		-- Of potassium

28352500

 		-- Calcium hydrogenorthophosphate ("dicalcium phosphate")

283526

 		-- Other phosphates of calcium :

28352610

 		--- Calcium monobasic phosphate

28352620

 		--- Calcium tribasic phosphate

28352690

 		--- Other

283529

 		-- Other :

28352910

 		--- Magnesium phosphate, monobasic

28352920

 		--- Magnesium phosphate, dibasic

28352930

 		--- Magnesium phosphate, tribasic

28352940

 		--- Sodium hexametaphosphate

28352990

 		--- Other

- Polyphosphates :

28353100

 		-- Sodium triphosphate (sodium tripoly-phosphate)

28353900

 		-- Other

2836

 		CARBONATES ; PEROXOCARBONATES (PERCARBONATES) ; COMMERCIAL AMMONIUM CARBONATE CONTAINING AMMONIUM CARBAMATE

283620

 		- Disodium carbonate :

28362010

 		--- Disodium carbonate, dense

28362020

 		--- Disodium carbonate, light

28362090

 		--- Other

28363000

 		- Sodium hydrogencarbonate (sodium bicarbonate)

28364000

 		- Potassium carbonates

28365000

 		- Calcium carbonate

28366000

 		- Barium carbonate

- Other :

28369100

 		-- Lithium carbonates

28369200

 		-- Strontium carbonate

283699

 		-- Other :

28369910

 		--- Percarbonates

28369920

 		--- Magnesium carbonate

28369930

 		--- Aluminium bicarbonate

28369990

 		--- Other

2837

 		CYANIDES , CYANIDE OXIDES AND COMPLEX CYANIDES

- Cyanides and cyanide oxides :

28371100

 		-- Of sodium

283719

 		-- Other :

28371910

 		--- Potassium cyanide

28371920

 		--- Double cyanide of potassium and sodium

28371990

 		--- Other

283720

 		- Complex cyanides :

28372010

 		--- Ammonium sulphocyanide

28372020

 		--- Potassium ferricyanide

28372030

 		--- Potassium ferrocyanide

28372040

 		--- Sodium ferrocyanide

28372050

 		--- Sodium nitroprusside (sodium nitroferricyanide)

28372090

 		--- Other

2838

 		[****]

2839

 		SILICATES ; COMMERCIAL ALKALI METAL SILICATES

- Of sodium :

28391100

 		-- Sodium metasilicates

28391900

 		-- Other

283990

 		- Other :

28399010

 		--- Magnesium trisilicate

28399090

 		--- Other

2840

 		BORATES; PEROXOBORATES (PERBORATES)

- Disodium tetraborate (refined borax) :

28401100

 		-- Anhydrous

28401900

 		-- Other

284020

 		- Other borates :

28402010

 		--- Magnesium borate

28402090

 		--- Other

28403000

 		- Peroxoborates (perborates)

2841

 		SALTS OF OXOMETALLIC OR PEROXOMETALLIC ACIDS

28413000

 		- Sodium dichromate

284150

 		- Other chromates and dichromates; peroxochromates :

28415010

 		--- Sodium chromate

28415090

 		--- Other

- Manganites, manganates and permanganates :

28416100

 		-- Potassium permanganate

28416900

 		-- Other

284170

 		- Molybdates :

28417010

 		--- Aluminium molybdate

28417020

 		--- Sodium molybdate

28417090

 		--- Other

284180

 		- Tungstates (wolframates) :

28418010

 		--- Sodium tungstate

28418020

 		--- Magnesium tungstate

28418090

 		--- Other

28419000

 		- Other

2842

 		OTHER SALTS OF INORGANIC ACIDS OR PEROXOACIDS, (INCLUDING ALUMINOSILICATES, WHETHER OR NOT CHEMICALLY DEFINED) , OTHER THAN AZIDES

28421000

 		- Double or complex silicates, including aluminosilicates, whether or not chemically defined

284290

 		- Other :

28429010

 		--- Arsenites and arsenates

28429020

 		--- Bichromates and dichromates

28429090

 		--- Other

VI. MISCELLANEOUS

2843

 		COLLOIDAL PRECIOUS METALS; INORGANIC OR ORGANIC COMPOUNDS OF PRECIOUS METALS, WHETHER OR NOT CHEMICALLY DEFINED; AMALGAMS OF PRECIOUS METALS

284310

 		- Colloidal precious metals :

28431010

 		--- Of gold

28431020

 		--- Of silver

28431090

 		--- Other

- Silver compounds :

28432100

 		-- Silver nitrate

28432900

 		-- Other

28433000

 		- Gold compounds

284390

 		- Other compounds; amalgams :

--- Other compounds :

28439011

 		---- Sodium aurous thiosulphate

28439012

 		---- Noble metal solutions of platinum, rhodium and palladium

28439019

 		---- Other

28439020

 		--- Amalgams

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

28441000

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

28442000

 		- Uranium enriched in U235 and its compounds; plutonium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U235, plutonium or compounds of these products

284430

 		- Uranium depleted in U235 and its compounds; thorium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium depleted in U235, thorium or compounds of these products :

28443010

 		--- Uranium depleted in U235 and thorium and their alloys, unwrought or wrought and compounds thereof

--- Compounds of thorium or of uranium depleted in U235 :

28443021

 		---- Thorium oxide

28443022

 		---- Thorium hydroxide

28443023

 		---- Thorium nitrate

28443029

 		---- Other

28443030

 		--- Waste and scrap of uranium depleted in U235 or of thorium

28443090

 		--- Other

- Radioactive elements and isotopes and compounds other than those of sub-heading 284410, 284420 or 284430; alloys, dispersions (including cermets), ceramic products and mixtures containing these elements, isotopes or compounds; radioactive residues:

28444100

 		-- Tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds

28444200

 		-- 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

28444300

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

28444400

 		-- Radioactive residues

28445000

 		- Spent (irradiated) fuel elements (cartridges) of nuclear reactors

2845

 		ISOTOPES OTHER THAN THOSE OF HEADING 2844; COMPOUNDS , INORGANIC OR ORGANIC , OF SUCH ISOTOPES, WHETHER OR NOT CHEMICALLY DEFINED

28451000

 		- Heavy water (deuterium oxide)

28452000

 		- Boron enriched in boron-10 and its compounds

28453000

 		- Lithium enriched in lithium-6 and its compounds

28454000

 		- Helium-3

284590

 		- Other :

28459010

 		--- Nuclear fuels not elsewhere included or specified

28459090

 		--- Other

2846

 		COMPOUNDS,INORGANIC OR ORGANIC,OF RARE-EARTH METALS, OF YTTRIUM OR OF SCANDIUM OR OF MIXTURES OF THESE METALS

284610

 		- Cerium compounds :

28461010

 		--- Cerium oxides

28461090

 		--- Other

284690

 		- Other :

28469010

 		--- Rare-earth oxides not elsewhere included or specified

28469020

 		--- Rare-earth fluorides not elsewhere included or specified

28469030

 		--- Rare-earth chlorides not elsewhere included or specified

28469090

 		--- Other

28470000

 		HYDROGEN PEROXIDE, WHETHER OR NOT SOLIDIFIED WITH UREA

2849

 		CARBIDES, WHETHER OR NOT CHEMICALLY DEFINED

28491000

 		- Of calcium

284920

 		- Of silicon :

28492010

 		--- Carborundum

28492090

 		--- Other

284990

 		- Other :

28499010

 		--- Boron carbide

28499020

 		--- Tungsten carbide

28499090

 		--- Other

2850

 		HYDRIDES, NITRIDES, AZIDES, SILICIDES AND BORIDES, WHETHER OR NOT CHEMICALLY DEFINED, OTHER THAN COMPOUNDS WHICH ARE ALSO CARBIDES OF HEADING 2849

285000

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

28500010

 		--- Hydrides

28500020

 		--- Nitrides

28500030

 		--- Azides

--- Silicides :

28500041

 		---- Of calcium

28500049

 		---- Other

28500050

 		--- Borides

2851

 		[****]

2852

 		INORGANIC OR ORGANIC COMPOUNDS OF MERCURY WHETHER OR NOT CHEMICALLY DEFINED, EXCLUDING AMALGAMS

28521000

 		- Chemically defined

28529000

 		- Other

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

28531000

 		- Cyanogen chloride (chlorcyan)

285390

 		- Other:

28539010

 		--- Distilled or conductivity water and water of similar purity

28539020

 		--- Liquid air, whether or not rare gases have been removed

28539030

 		--- Compressed air

28539040

 		--- Amalgams, other than of precious metals

28539050

 		--- Magnesium phosphide plates, zinc phosphide

28539090

 		--- Other