Azo dyes containing onium groups

Introduced: January 1980

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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C09B 44/005 CPC only CPC only
C09B 44/02 containing ammonium groups not directly attached to an azo group since 1980 IPC+CPC Available in IPC and CPC
C09B 44/10 containing cyclammonium groups attached to an azo group by a carbon atom of the ring system since 1980 +5 CPC IPC+CPC Available in IPC and CPC