Fluorine, chlorine, bromine and iodine:

Hydrogen, rare gases and other non-metals:

Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, in pure form, in mixtures and alloys; mercury:
Alkali or alkaline-earth metals:

Hydrogen chloride (hydrochloric acid); chlorosulphuric acid:

Sulphuric acid; oleum:

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

Oxides of boron; boric acids:

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

Halides and halide oxides of non-metals:

Sulphides of non-metals; commercial phosphorus trisulphide:

Ammonia, anhydrous or in aqueous solution:

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

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

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

Chromium oxides and hydroxides:

Manganese oxides:

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

Lead oxides; minium (red lead and orange lead):

Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other oxides, hydroxides and peroxides of metals:

Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts:
Fluorides:

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

Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites:

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

Sulphides; polysulphides, whether or not chemically defined:

Dithionites and sulphoxylates:

Sulphites; thiosulphates:

Sulphates; alums; peroxosulphates (persulphates):
Sodium sulphates:

Nitrites; nitrates:

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

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

Cyanides, cyanide oxides and complex cyanides:
Cyanides and cyanide oxides:

Silicates; commercial alkali metal silicates:
Of sodium:

Borates; peroxoborates (perborates):
Disodium tetraborate (refined borax):

Salts of oxometallic or peroxometallic acids:

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

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

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

Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined:

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

Carbides, whether or not chemically defined:

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

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