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PCE
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DIFF Subgroup
B01J 27/24

Nitrogen compounds

Introduced: July 1974

Full Title

Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds > Nitrogen compounds

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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  • B01J 27/25 Nitrates since 1985 IPC+CPC Available in IPC and CPC
  • B01J 27/26 Cyanides since 1974 IPC+CPC Available in IPC and CPC