Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
C23C 22/24

containing hexavalent chromium compounds

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals > using aqueous solutions > using aqueous acidic solutions with pH < 6 > containing hexavalent chromium compounds

CPC:

Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals > using aqueous solutions > using aqueous acidic solutions with pH less than 6 > containing hexavalent chromium compounds

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

Navigate with arrow keys, Enter to open

  • C23C 22/30 containing also trivalent chromium since 1985 IPC+CPC Available in IPC and CPC
  • C23C 22/32 containing also pulverulent metals since 1985 IPC+CPC Available in IPC and CPC
  • C23C 22/33 containing also phosphates since 1985 IPC+CPC Available in IPC and CPC