Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
C01B 25/20

Preparation from elemental phosphorus or phosphoric anhydride

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Phosphorus; Compounds thereof > Oxyacids of phosphorus; Salts thereof > Phosphoric acid > Preparation from elemental phosphorus or phosphoric anhydride

CPC:

Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16) > Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C01B15/00) > Phosphoric acid > Preparation from elemental phosphorus or phosphoric anhydride

No child classifications to compare. This is a leaf node in both IPC and CPC.