DIFF Subgroup
C01B 25/32 Phosphates of magnesium, calcium, strontium, or barium
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Phosphorus; Compounds thereof > Oxyacids of phosphorus; Salts thereof > Phosphates > Phosphates of magnesium, calcium, strontium, or barium
CPC:
Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16) > Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C01B15/00) > Phosphates (perphosphates C01B15/16) > Phosphates of magnesium, calcium, strontium, or barium
CPC subdivides this area 7x more granularly than IPC with 6 additional codes.
6 codes are CPC-only extensions.
Child Classifications
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