|  | 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

|  | C08 |
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON (production of artificial threads, fibres, bristles or ribbons Fulltext... Hierarchy... Expanded...D01)

|  | C08K |
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS (pesticides, herbicides Fulltext... Hierarchy... Expanded...A01N; pharmaceuticals, cosmetics Fulltext... Hierarchy... Expanded...A61K; explosives Fulltext... Hierarchy... Expanded...C06B; paints, inks, varnishes, dyes, polishes, adhesives Fulltext... Hierarchy... Expanded...C09; lubricants Fulltext... Hierarchy... Expanded...C10M; detergents Fulltext... Hierarchy... Expanded...C11D; artificial filaments or fibres per se Fulltext... Hierarchy... Expanded...D01F; textile treating compositions Fulltext... Hierarchy... Expanded...D06) [2]

|  | C08K |
Note(s) In this sub-class, an ingredient is classified in the last appropriate place. [2] Ammonium salts are classified in the same way as metal salts. [2] In this sub-class it is desirable to add, in conformity with paragraph 61 of the Guide, after the double oblique stroke the symbols relating to complementary information concerning individual constituents of a technical subject which is already classified as such. This complementary information concerns the indication of additional compounding ingredients. [2]

|  | C08K 3/00 |
Use of inorganic ingredients [2]

|  | C08K 3/02 |
· | Elements [2]

|  | C08K 3/04 |
· · | Carbon [2]

|  | C08K 3/06 |
· · | Sulphur [2]

|  | C08K 3/08 |
· · | Metals [2]

|  | C08K 3/10 |
· | Metal compounds [2]

|  | C08K 3/12 |
· · | Hydrides [2]

|  | C08K 3/14 |
· · | Carbides [2]

|  | C08K 3/16 |
· | Halogen-containing compounds [2]

|  | C08K 3/18 |
· | Oxygen-containing compounds, e.g. metal carbonyls [2]

|  | C08K 3/20 |
· · | Oxides; Hydroxides [2]

|  | C08K 3/22 |
· · · | of metals [2]

|  | C08K 3/24 |
· · | Acids; Salts thereof [2]

|  | C08K 3/26 |
· · · | Carbonates; Bicarbonates [2]

|  | C08K 3/28 |
· | Nitrogen-containing compounds [2]

|  | C08K 3/30 |
· | Sulphur-, selenium-, or tellurium-containing compounds [2]

|  | C08K 3/32 |
· | Phosphorus-containing compounds [2]

|  | C08K 3/34 |
· | Silicon-containing compounds [2]

|  | C08K 3/36 |
· · | Silica [2]

|  | C08K 3/38 |
· | Boron-containing compounds [2]

|  | C08K 3/40 |
· | Glass [2]

|  | C08K 5/00 |
Use of organic ingredients [2]

|  | C08K 5/01 |
· | Hydrocarbons [2]

|  | C08K 5/02 |
· | Halogenated hydrocarbons [2]

|  | C08K 5/03 |
· · | aromatic [2]

|  | C08K 5/04 |
· | Oxygen-containing compounds [2]

|  | C08K 5/05 |
· · | Alcohols; Metal alcoholates [2]

|  | C08K 5/06 |
· · | Ethers; Acetals; Ketals; Ortho-esters [2]

|  | C08K 5/07 |
· · | Aldehydes; Ketones [2]

|  | C08K 5/08 |
· · · | Quinones [2]

|  | C08K 5/09 |
· · | Carboxylic acids; Metal salts thereof; Anhydrides thereof [2]

|  | C08K 5/10 |
· · | Esters; Ether-esters [2]

|  | C08K 5/11 |
· · · | of acyclic polycarboxylic acids [2]

|  | C08K 5/12 |
· · · | of cyclic polycarboxylic acids [2]

|  | C08K 5/13 |
· · | Phenols; Phenolates [2]

|  | C08K 5/14 |
· · | Peroxides [2]

|  | C08K 5/15 |
· · | Heterocyclic compounds having oxygen in the ring [2]

|  | C08K 5/16 |
· | Nitrogen-containing compounds [2]

|  | C08K 5/17 |
· · | Amines; Quaternary ammonium compounds [2]

|  | C08K 5/18 |
· · · | with aromatically bound amino groups [2]

|  | C08K 5/19 |
· · · | Quaternary ammonium compounds [2]

|  | C08K 5/20 |
· · | Carboxylic acid amides [2]

|  | C08K 5/21 |
· · | Urea; Derivatives thereof, e.g. biuret [2]

|  | C08K 5/22 |
· · | Compounds containing nitrogen bound to another nitrogen atom [2]

|  | C08K 5/23 |
· · · | Azo-compounds [2]

|  | C08K 5/24 |
· · · | Derivatives of hydrazine [2]

|  | C08K 5/25 |
· · · · | Carboxylic acid hydrazides [2]

|  | C08K 5/26 |
· · · · | Semicarbazides [2]

|  | C08K 5/27 |
· · · | Compounds containing a nitrogen atom bound to two other nitrogen atoms, e.g. diazoamino-compounds [2]

|  | C08K 5/28 |
· · · · | Azides [2]

|  | C08K 5/29 |
· · | Compounds containing one or more carbon-to-nitrogen double bonds [2]

|  | C08K 5/30 |
· · · | Hydrazones; Semicarbazones [2]

|  | C08K 5/31 |
· · · | Guanidine; Derivatives thereof [2]

|  | C08K 5/32 |
· · | Compounds containing nitrogen bound to oxygen [2]

|  | C08K 5/33 |
· · · | Oximes [2]

|  | C08K 5/34 |
· · | Heterocyclic compounds having nitrogen in the ring [2]

|  | C08K 5/35 |
· · · | having also oxygen in the ring [2]

|  | C08K 5/36 |
· | Sulphur-, selenium-, or tellurium-containing compounds [2]

|  | C08K 5/37 |
· · | Mercaptans; Hydrocarbon sulphides [2]

|  | C08K 5/38 |
· · | Thiocarbonic acids; Derivatives thereof, e.g. xanthates [2]

|  | C08K 5/39 |
· · | Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates [2]

|  | C08K 5/40 |
· · · | Thiurams [2]

|  | C08K 5/41 |
· · | Compounds containing sulphur bound to oxygen [2]

|  | C08K 5/42 |
· · · | Sulphonic acids; Derivatives thereof [2]

|  | C08K 5/43 |
· · | Compounds containing sulphur bound to nitrogen [2]

|  | C08K 5/44 |
· · · | Sulphenamides [2]

|  | C08K 5/45 |
· · | Heterocyclic compounds having sulphur in the ring [2]

|  | C08K 5/46 |
· · · | with oxygen or nitrogen in the ring [2]

|  | C08K 5/47 |
· · · · | Thiazoles [2]

|  | C08K 5/48 |
· · | Selenium- or tellurium-containing compounds [2]

|  | C08K 5/49 |
· | Phosphorus-containing compounds [2]

|  | C08K 5/50 |
· · | Phosphorus bound to carbon [2]

|  | C08K 5/51 |
· · | Phosphorus bound to oxygen [2]

|  | C08K 5/52 |
· · · | bound to oxygen only [2]

|  | C08K 5/53 |
· · · | bound to oxygen and to carbon [2]

|  | C08K 5/54 |
· | Silicon-containing compounds [2]

|  | C08K 5/55 |
· | Boron-containing compounds [2]

|  | C08K 5/56 |
· | Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond [2]

|  | C08K 5/57 |
· · | Organo-tin compounds [2]

|  | C08K 5/58 |
· · · | containing sulphur [2]

|  | C08K 5/59 |
· | Arsenic- or antimony-containing compounds [2]

|  | C08K 7/00 |
Use of ingredients characterised by shape [2]

|  | C08K 7/02 |
· | Fibres or whiskers [2]

|  | C08K 7/04 |
· · | inorganic [2]

|  | C08K 7/06 |
· · · | Elements [2]

|  | C08K 7/08 |
· · · | Oxygen-containing compounds [2]

|  | C08K 7/10 |
· · · | Silicon-containing compounds [2]

|  | C08K 7/12 |
· · · · | Asbestos [2]

|  | C08K 7/14 |
· · · | Glass [2]

|  | C08K 7/16 |
· | Solid spheres [2]

|  | C08K 7/18 |
· · | inorganic [2]

|  | C08K 7/20 |
· · · | Glass [2]

|  | C08K 7/22 |
· | Expanded, porous or hollow particles [2]

|  | C08K 7/24 |
· · | inorganic [2]

|  | C08K 7/26 |
· · · | Silicon-containing compounds [2]

|  | C08K 7/28 |
· · · | Glass [2]

|  | C08K 9/00 |
Use of pretreated ingredients [2]

|  | C08K 9/02 |
· | Ingredients treated with inorganic substances [2]

|  | C08K 9/04 |
· | Ingredients treated with organic substances [2]

|  | C08K 9/06 |
· · | with silicon-containing compounds [2]

|  | C08K 9/08 |
· | Ingredients agglomerated by treatment with a binding agent [2]

|  | C08K 9/10 |
· | Encapsulated ingredients [2]

|  | C08K 9/12 |
· | Adsorbed ingredients [2]

|  | C08K 11/00 |
Use of ingredients of unknown constitution, e.g. undefined reaction products [2]