IPC 7 English version
C01D-C01D01700

SECTION C – CHEMISTRY; METALLURGY


C 01INORGANIC CHEMISTRY (processing powders of inorganic compounds preparatory to the manufacturing of ceramic products C04B 35/00; fermentation or enzyme-using processes for the preparation of elements or inorganic compounds except carbon dioxide C12P 3/00; obtaining metal compounds from mixtures, e.g. ores, which are intermediate compounds in a metallurgical process for obtaining a free metal C21B, C22B; production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis C25B)


C 01 DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM (metal hydrides C01B 6/00; salts of oxyacids of halogens C01B 11/00; peroxides, salts of peroxyacids C01B 15/00; sulfides or polysulfides 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; metal amides C01B 21/092; nitrites C01B 21/50; phosphides C01B 25/08; salts of oxyacids of phosphorus C01B 25/16; carbides C01B 31/30; 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)


Note

 Therapeutic activity of compounds is further classified in subclass A61P. [7]


1/

00Oxides or hydroxides of sodium, potassium, or alkali metals in general  [2]

1/

02.Oxides

1/

04.Hydroxides

1/

20..Preparation by reacting oxides or hydroxides with alkali metal salts

1/

22...with carbonates or bicarbonates

1/

24...from or via fluorides or silico-fluorides

1/

26..Preparation from or via cyano compounds, e.g. cyanides, cyanamides

1/

28..Purification; Separation

1/

30...by crystallisation

1/

32...by adsorption or precipitation

1/

34...with selective solvents

1/

36...by oxidation

1/

38...by dialysis

1/

40...by electrolysis

1/

42..Concentration; Dehydration

1/

44..Preparation in the form of granules, pieces, or other shaped products


3/

00Halides of sodium, potassium, or alkali metals in general  [2]

3/

02.Fluorides

3/

04.Chlorides

3/

06..Preparation by working up brines, seawater or spent lyes

3/

08..Preparation by working up natural or industrial salt mixtures or siliceous minerals

3/

10.Bromides

3/

12.Iodides

3/

14.Purification

3/

16..by precipitation or adsorption

3/

18..with selective solvents

3/

20..by melting

3/

22.Preparation in the form of granules, pieces, or other shaped products

3/

24..Influencing the crystallisation process

3/

26.Preventing the absorption of moisture or caking of the crystals


5/

00Sulfates or sulfites of sodium, potassium, or alkali metals in general  [2]

5/

02.Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates; Preparation of bisulfates

5/

04.Preparation of sulfates with the aid of sulfurous acid or sulfites, e.g. Hargreaves process

5/

06.Preparation of sulfates by double decomposition

5/

08..with each other or with ammonium sulfate

5/

10..with sulfates of magnesium, calcium, strontium, or barium

5/

12.Preparation of double sulfates of magnesium with sodium or potassium  [2]

5/

14.Preparation of sulfites (C01D 5/04 takes precedence)

5/

16.Purification

5/

18.Dehydration


7/

00Carbonates of sodium, potassium, or alkali metals in general  [2]

7/

02.Preparation by double decomposition

7/

04..with a fluoride or silico-fluoride (C01D 1/24 takes precedence)

7/

06.Preparation via sodium or potassium magnesium carbonate

7/

07.Preparation from the hydroxides  [2]

7/

08.Preparation from or via cyano compounds of sodium or potassium (C01D 1/26 takes precedence)

7/

10.Preparation of bicarbonates from carbonates (ammonia-soda process C01D 7/18)

7/

12.Preparation of carbonates from bicarbonates

7/

14.Preparation of sesquicarbonates

7/

16.Preparation from compounds of sodium or potassium with amines and carbon dioxide

7/

18.Preparation by the ammonia-soda process

7/

22.Purification

7/

24..Crystallisation

7/

26..by precipitation or adsorption

7/

28..with selective solvents

7/

30..by oxidation

7/

32..by dialysis

7/

34..by electrolysis

7/

35.Varying the content of water of crystallisation or the specific gravity  [2]

7/

37..Densifying sodium carbonate  [2]

7/

38.Preparation in the form of granules, pieces, or other shaped products

7/

40..Influencing the crystallisation process

7/

42.Preventing the absorption of moisture or caking


9/

00Nitrates of sodium, potassium, or alkali metals in general  [2]

9/

02.Preparation by working-up natural salt mixtures

9/

04.Preparation with liquid nitric acid

9/

06.Preparation with gaseous nitric acid or nitrogen oxides

9/

08.Preparation by double decomposition

9/

10..with ammonium nitrate

9/

12..with nitrates of magnesium, calcium, strontium, or barium

9/

14..of salts of potassium with sodium nitrate

9/

16.Purification

9/

18.Preparation in the form of shaped products, e.g. granules

9/

20.Preventing the absorption of moisture or caking


13/

00Compounds of sodium or potassium not provided for elsewhere  [2]


15/

00Lithium compounds  [2]

15/

02.Oxides; Hydroxides  [2]

15/

04.Halides  [2]

15/

06.Sulfates; Sulfites  [2]

15/

08.Carbonates; Bicarbonates  [2]

15/

10.Nitrates  [2]


17/

00Rubidium, caesium, or francium compounds  [2]