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CPC Definition - Subclass C01D

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Last Updated Version: 2021.08
C01D
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM (metal hydrides {monoborane, diborane or addition complexes thereof} C01B 6/00; salts of oxyacids of halogens C01B 11/00; peroxides, salts of peroxyacids C01B 15/00; sulfides C01B 17/22; thiosulfates, dithionites, polythionates C01B 17/64; compounds containing selenium or tellurium C01B 19/00; binary compounds of nitrogen with metals C01B 21/06; azides C01B 21/08; {compounds other than ammonia and cyanogen, containing nitrogen and other non-metals C01B 21/082}; metal amides C01B 21/092; nitrites C01B 21/50; phosphides C01B 21/50; {compounds of noble gases C01B 23/0005}; phosphides C01B 25/08; salts of oxyacids of phosphorus C01B 25/16; carbides C01B 32/90; compounds containing silicon C01B 33/00; compounds containing boron C01B 35/00; cyanides C01C 3/08; salts of cyanic acid C01C 3/14; salts of cyanamide C01C 3/16; thiocyanates C01C 3/20)
Definition statement

This place covers:

  • Oxides or hydroxides; halides; sulfates or sulfites; carbonates; nitrates of sodium, potassium or other alkali
  • metals in general
  • Compounds of sodium or potassium not provided for elsewhere
  • Lithium compounds, e.g. oxides, halides, sulfates, carbonates, nitrates
  • Rubidium, caesium or francium compounds
  • Synthesis, treatment or modification of any the elements or compounds above
  • Forming shaped alkali metal compounds and the shaped products, per se, e.g. granules
Relationships with other classification places

MULTIPLE CLASSIFICATION

Biocidal, pest repellant, pest attractant, or plant growth regulatory activity of chemical compounds or preparations is further classified in A01P.

Therapeutic activity of chemical compounds or medicinal preparations is further classified in subclass A61P.

Uses of cosmetics or similar toilet preparations are further classified in subclass A61Q.

References
Limiting references

This place does not cover:

This subclass does not cover exceptions to the last appropriate place rule:

Metal hydrides, monoborane, diborane or addition complexes thereof

C01B 6/00

Salts of oxyacids of halogens

C01B 11/00

Peroxides, salts of peroxyacids

C01B 15/00

Sulfides or polysulfides of magnesium, calcium, strontium, or barium

C01B 17/42

Thiosulfates, dithionites, polythionates

C01B 17/64

Compounds containing selenium or tellurium

C01B 19/00

Binary compounds of nitrogen with metals

C01B 21/06

Azides

C01B 21/08

Compounds other than ammonia or cyanogen containing nitrogen and non-metals and optionally metals

C01B 21/082

Amides or imides of silicon

C01B 21/087

Metal imides or amides

C01B 21/092, C01B 21/0923

Nitrites

C01B 21/50

Compounds of noble gases

C01B 23/0005

Phosphides

C01B 25/08

Salts of oxyacids of phosphorus

C01B 25/16

Carbides

C01B 32/90

Compounds containing silicon

C01B 33/00

Compounds containing boron

C01B 35/00

Compounds having molecular sieve properties but not having base-exchange properties

C01B 37/00

Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites

C01B 39/00

Cyanides

C01C 3/08

Salts of cyanic acid

C01C 3/14

Salts of cyanamide

C01C 3/16

Thiocyanates

C01C 3/20

Special rules of classification

In this subclass, in the absence of an indication to the contrary, a compound is classified in the last appropriate place.

Oxides or hydroxides of sodium, potassium or alkali metals in general
Definition statement

This place covers:

Oxides or hydroxides of sodium or of potassium when claimed per se or the preparation thereof.

For example :

  • Preparation by reacting oxides with alkali metal salts, from cyano compounds
  • Purification by crytallisation, oxydation, dialysis
  • Preparation in the form of shaped products
Halides of sodium, potassium or alkali metals in general {(halides in general C01B 9/00)}
Definition statement

This place covers:

Halides of sodium or of potassium when claimed per se or the preparation thereof.

For example :

  • Preparation by working up brines
  • Purification by solid chelating agents, with selective solvents, by melting
  • Preparation in the form of shaped products
  • Prevention of moisture absorption of the crystals
References
Limiting references

This place does not cover:

Halides in general

C01B 9/00

Sulfates or sulfites of sodium, potassium or alkali metals in general {(sulfites in general C01B 17/62)}
Definition statement

This place covers:

Sulfates and sulfites of sodium or of potassium when claimed per se or the preparation thereof.

For example :

  • Preparation of sulfates from akali slats and sulfuric acids
  • Preparation of potassium sulfate from alunite
  • Preparation of sulfates by double decomposition
  • Preparation of sulfites
  • Purification or dehydration
  • Preparation in the form of shaped products
  • Prevention of moisture absorption of the crystals
Carbonates of sodium, potassium or alkali metals in general
Definition statement

This place covers:

Carbonates of sodium or of potassium when claimed per se or the preparation thereof.

For example :

  • Preparation by double decomposition
  • Preparation from the hydroxides
  • Preparation of bicarbonatesm sesquicarbonates
  • Purification by crystallisation, by oxydation, by electrolysis
  • Preparation in the form of shaped products
  • Prevention of moisture absorption
Nitrates of sodium, potassium or alkali metals in general {(preparation as fertilizers or of fertilizers containing them C05D 5/00)}
Definition statement

This place covers:

Nitrates of sodium or of potassium when claimed per se or the preparation thereof.

For example :

  • Preparation by working-up natural salt mixtures
  • Preparation with gaseous nitric acid or nitrogen oxides
  • Preparation of by double decomposition
  • Purification
  • Preparation in the form of shaped products
  • Prevention of moisture absorption
References
Limiting references

This place does not cover:

Preparation of fertilizers or of fertilizers containing them

C05D 5/00

Compounds of sodium or potassium not provided for elsewhere
Definition statement

This place covers:

Compounds of sodium or potassium not provided for elsewhere when claimed per se or the preparation thereof.

Lithium compounds
Definition statement

This place covers:

Compounds of lithium claimed per se or the preparation thereof.

For example :

  • Lithium hexafluorophosphate
  • Oxides, halides, carbonates, nitrates of lithium
Rubidium, caesium or francium compounds
Definition statement

This place covers:

Compounds of rubidium, caesium, or francium claimed per se or the preparation thereof.

For example :

  • Compounds of Rubidium, Caesium or Francium combined with alkali metals