containing molybdates, tungstates or vanadates

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 molybdates, tungstates or vanadates

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 molybdates, tungstates or vanadates

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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C23C 22/42 containing also phosphates since 1985 IPC+CPC Available in IPC and CPC
C23C 22/43 containing also hexavalent chromium compounds since 1985 IPC+CPC Available in IPC and CPC
C23C 22/44 containing also fluorides or complex fluorides since 1985 IPC+CPC Available in IPC and CPC