CPC Main Group
C01B 25/00 Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16)
10 direct subcodes
Child Classifications
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- C01B 25/01 Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds
- C01B 25/02 Preparation of phosphorus
- C01B 25/04 Purification of phosphorus
- C01B 25/06 Hydrogen phosphides
- C01B 25/08 Other phosphides
- C01B 25/10 Halides or oxyhalides of phosphorus
- C01B 25/12 Oxides of phosphorus
- C01B 25/14 Sulfur, selenium, or tellurium compounds of phosphorus
- C01B 25/16 Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C01B15/00)