|  | C |
SECTION C — CHEMISTRY AND METALLURGY

|  | C |
Note(s) Definitions for Section C: Alkali metals: Li, Na, K, Rb, Cs, Fr Alkaline earth metals: Ca, Sr, Ba, Ra Lanthanides: elements with atomic numbers 57 to 71 inclusive Rare earths: Sc, Y, Lanthanides Actinides: elements with atomic numbers 89 to 103 inclusive Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W Halogens: F, Cl, Br, I, At Noble gases: He, Ne, Ar, Kr, Xe, Rn Platinum group: Os, Ir, Pt, Ru, Rh, Pd Noble metals: Ag, Au, Platinum group Light metals: alkali metals, alkaline earth metals, Be, Al, Mg Heavy metals: metals other than light metals Iron group: Fe, Co, Ni Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens Metals: elements other than non-metals Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

CHEMISTRY

|  | C01 |
INORGANIC CHEMISTRY (obtaining metal compounds from mixtures, e.g. ores, which are intermediate compounds in a metallurgical process for obtaining a free metal Fulltext... Hierarchy... Expanded...C21B, Fulltext... Hierarchy... Expanded...C22B; production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis Fulltext... Hierarchy... Expanded...C25B)

|  | C01 |
Note(s) In the absence of an indication to the contrary, a compound is classified in the last appropriate place within this class. [3]

|  | C01G |
COMPOUNDS CONTAINING METALS NOT COVERED BY SUB-CLASSES Fulltext... Hierarchy... Expanded...C01D OR Fulltext... Hierarchy... Expanded...C01F (metal hydrides Fulltext... Hierarchy... Expanded...C01B 6/00; salts of oxyacids of halogens Fulltext... Hierarchy... Expanded...C01B 11/00; peroxides, salts of peroxyacids Fulltext... Hierarchy... Expanded...C01B 15/00; thiosulphates, dithionites, polythionates Fulltext... Hierarchy... Expanded...C01B 17/64; compounds containing selenium or tellurium Fulltext... Hierarchy... Expanded...C01B 19/00; binary compounds of nitrogen with metals Fulltext... Hierarchy... Expanded...C01B 21/06; azides Fulltext... Hierarchy... Expanded...C01B 21/08; metal amides Fulltext... Hierarchy... Expanded...C01B 21/092; nitrites Fulltext... Hierarchy... Expanded...C01B 21/50; phosphides Fulltext... Hierarchy... Expanded...C01B 25/08; salts of oxyacids of phosphorus Fulltext... Hierarchy... Expanded...C01B 25/16; carbides Fulltext... Hierarchy... Expanded...C01B 31/30; compounds containing silicon Fulltext... Hierarchy... Expanded...C01B 33/00; compounds containing boron Fulltext... Hierarchy... Expanded...C01B 35/00; cyanides Fulltext... Hierarchy... Expanded...C01C 3/08; salts of cyanic acid Fulltext... Hierarchy... Expanded...C01C 3/14; salts of cyanamide Fulltext... Hierarchy... Expanded...C01C 3/16; thiocyanates Fulltext... Hierarchy... Expanded...C01C 3/20)

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Methods of preparing compounds of metals not provided for in sub-classes Fulltext... Hierarchy... Expanded...C01B, Fulltext... Hierarchy... Expanded...C01C, Fulltext... Hierarchy... Expanded...C01D, Fulltext... Hierarchy... Expanded...C01F, in general (electrolytic production of inorganic compounds Fulltext... Hierarchy... Expanded...C25B 1/00) [2]

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· | oxides

|  | C01G 1/04 |
· | carbonyls

|  | C01G 1/06 |
· | halides

|  | C01G 1/08 |
· | nitrates

|  | C01G 1/10 |
· | sulphates

|  | C01G 1/12 |
· | sulphides

|  | C01G 1/14 |
· | sulphites

|  | C01G 3/00 |
Compounds of copper

|  | C01G 3/02 |
· | Oxides; Hydroxides

|  | C01G 3/04 |
· | Halides

|  | C01G 3/05 |
· · | Chlorides [3]

|  | C01G 3/06 |
· · | Oxychlorides

|  | C01G 3/08 |
· | Nitrates

|  | C01G 3/10 |
· | Sulphates

|  | C01G 3/12 |
· | Sulphides

|  | C01G 3/14 |
· | Complexes with ammonia

|  | C01G 5/00 |
Compounds of silver

|  | C01G 5/02 |
· | Halides [3]

|  | C01G 7/00 |
Compounds of gold

|  | C01G 9/00 |
Compounds of zinc

|  | C01G 9/02 |
· | Oxides; Hydroxides

|  | C01G 9/03 |
· · | Processes of production using dry methods, e.g. vapour phase processes [3]

|  | C01G 9/04 |
· | Halides

|  | C01G 9/06 |
· | Sulphates

|  | C01G 9/08 |
· | Sulphides

|  | C01G 11/00 |
Compounds of cadmium

|  | C01G 11/02 |
· | Sulphides [3]

|  | C01G 13/00 |
Compounds of mercury

|  | C01G 13/02 |
· | Oxides

|  | C01G 13/04 |
· | Halides

|  | C01G 15/00 |
Compounds of gallium, indium, or thallium

|  | C01G 17/00 |
Compounds of germanium

|  | C01G 17/02 |
· | Germanium dioxide

|  | C01G 17/04 |
· | Halides of germanium

|  | C01G 19/00 |
Compounds of tin

|  | C01G 19/02 |
· | Oxides

|  | C01G 19/04 |
· | Halides

|  | C01G 19/06 |
· · | Stannous chloride

|  | C01G 19/08 |
· · | Stannic chloride

|  | C01G 21/00 |
Compounds of lead

|  | C01G 21/02 |
· | Oxides

|  | C01G 21/04 |
· · | Lead suboxide (Pb2O)

|  | C01G 21/06 |
· · | Lead monoxide (PbO)

|  | C01G 21/08 |
· · | Lead dioxide (PbO2)

|  | C01G 21/10 |
· · | Red lead (Pb3O4)

|  | C01G 21/12 |
· | Hydroxides

|  | C01G 21/14 |
· | Carbonates

|  | C01G 21/16 |
· | Halides

|  | C01G 21/18 |
· | Nitrates

|  | C01G 21/20 |
· | Sulphates

|  | C01G 21/21 |
· | Sulphides [3]

|  | C01G 21/22 |
· | Plumbates; Plumbites

|  | C01G 23/00 |
Compounds of titanium

|  | C01G 23/02 |
· | Halides of titanium

|  | C01G 23/04 |
· | Oxides; Hydroxides

|  | C01G 23/047 |
· · | Titanium dioxide [3]

|  | C01G 23/053 |
· · · | Producing by wet processes, e.g. hydrolysing titanium salts [3]

|  | C01G 23/06 |
( transferred to Fulltext... Hierarchy... Expanded...C01G 23/053 )

|  | C01G 23/07 |
· · · | Producing by vapour phase processes, e.g. halide oxidation [3]

|  | C01G 23/08 |
· · · | Drying; Calcining

|  | C01G 25/00 |
Compounds of zirconium

|  | C01G 25/02 |
· | Oxides

|  | C01G 25/04 |
· | Halides

|  | C01G 25/06 |
· | Sulphates

|  | C01G 27/00 |
Compounds of hafnium

|  | C01G 27/02 |
· | Oxides

|  | C01G 27/04 |
· | Halides

|  | C01G 27/06 |
· | Sulphates

|  | C01G 28/00 |
Compounds of arsenic [3]

|  | C01G 28/02 |
· | Arsenates; Arsenites [3]

|  | C01G 29/00 |
Compounds of bismuth

|  | C01G 30/00 |
Compounds of antimony [3]

|  | C01G 30/02 |
· | Antimonates; Antimonites [3]

|  | C01G 31/00 |
Compounds of vanadium

|  | C01G 31/02 |
· | Oxides [3]

|  | C01G 31/04 |
· | Halides [3]

|  | C01G 33/00 |
Compounds of niobium

|  | C01G 35/00 |
Compounds of tantalum

|  | C01G 35/02 |
· | Halides [3]

|  | C01G 37/00 |
Compounds of chromium

|  | C01G 37/02 |
· | Oxides or hydrates thereof

|  | C01G 37/027 |
· · | Chromium dioxide [3]

|  | C01G 37/033 |
· · | Chromium trioxide; Chromic acid [3]

|  | C01G 37/04 |
· | Chromium halides

|  | C01G 37/06 |
· · | Chromylhalides

|  | C01G 37/08 |
· | Chromium sulphates

|  | C01G 37/10 |
· · | Chrome alum

|  | C01G 37/12 |
( transferred to Fulltext... Hierarchy... Expanded...C01G 37/033 )

|  | C01G 37/14 |
· | Chromates; Bichromates

|  | C01G 39/00 |
Compounds of molybdenum

|  | C01G 39/02 |
· | Oxides; Hydroxides [3]

|  | C01G 39/04 |
· | Halides [3]

|  | C01G 39/06 |
· | Sulphides [3]

|  | C01G 41/00 |
Compounds of tungsten

|  | C01G 41/02 |
· | Oxides; Hydroxides [3]

|  | C01G 41/04 |
· | Halides [3]

|  | C01G 43/00 |
Compounds of uranium

|  | C01G 43/01 |
· | Oxides; Hydroxides [3]

|  | C01G 43/02 |
( transferred to Fulltext... Hierarchy... Expanded...C01G 43/01 )

|  | C01G 43/025 |
· · | Uranium dioxide [3]

|  | C01G 43/04 |
· | Halides of uranium

|  | C01G 43/06 |
· · | Fluorides

|  | C01G 43/08 |
· · | Chlorides

|  | C01G 43/10 |
· · | Bromides

|  | C01G 43/12 |
· · | Iodides

|  | C01G 45/00 |
Compounds of manganese

|  | C01G 45/02 |
· | Oxides; Hydroxides

|  | C01G 45/04 |
· | Carbonyls

|  | C01G 45/06 |
· | Halides

|  | C01G 45/08 |
· | Nitrates

|  | C01G 45/10 |
· | Sulphates

|  | C01G 45/12 |
· | Manganates; Permanganates

|  | C01G 47/00 |
Compounds of rhenium

|  | C01G 49/00 |
Compounds of iron

|  | C01G 49/02 |
· | Oxides; Hydroxides

|  | C01G 49/04 |
· · | Ferrous oxide (FeO)

|  | C01G 49/06 |
· · | Ferric oxide (Fe2O3)

|  | C01G 49/08 |
· · | Ferroso-ferric oxide (Fe3O4)

|  | C01G 49/10 |
· | Halides

|  | C01G 49/12 |
· | Sulphides

|  | C01G 49/14 |
· | Sulphates

|  | C01G 49/16 |
· | Carbonyls

|  | C01G 51/00 |
Compounds of cobalt

|  | C01G 51/02 |
· | Carbonyls

|  | C01G 51/04 |
· | Oxides; Hydroxides

|  | C01G 51/06 |
· | Carbonates

|  | C01G 51/08 |
· | Halides

|  | C01G 51/10 |
· | Sulphates

|  | C01G 51/12 |
· | Complexes with ammonia

|  | C01G 53/00 |
Compounds of nickel

|  | C01G 53/02 |
· | Carbonyls

|  | C01G 53/04 |
· | Oxides; Hydroxides

|  | C01G 53/06 |
· | Carbonates

|  | C01G 53/08 |
· | Halides

|  | C01G 53/09 |
· · | Chlorides [3]

|  | C01G 53/10 |
· | Sulphates

|  | C01G 53/11 |
· | Sulphides [3]

|  | C01G 53/12 |
· | Complexes with ammonia

|  | C01G 55/00 |
Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum

|  | C01G 56/00 |
Compounds of transuranic elements

|  | C01G 57/00 |
Compounds of metals not covered elsewhere in this sub-class