CPC Definition - Subclass C01D

Last Updated Version: 2017.08
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
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