Nitrogen; Compounds thereof

Introduced: September 1968

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

C01B 21/02 Preparation of nitrogen (by decomposition of ammonia C01B3/047) IPC+CPC Available in IPC and CPC
C01B 21/04 Purification or separation of nitrogen (by liquefying F25J) +1 CPC IPC+CPC Available in IPC and CPC
C01B 21/06 Binary compounds of nitrogen with metals, with silicon, or with boron, (azides C01B21/08) +8 CPC IPC+CPC Available in IPC and CPC
C01B 21/08 Hydrazoic acid; Azides; Halogen azides IPC+CPC Available in IPC and CPC
C01B 21/082 Compounds containing nitrogen and non-metals (C01B21/06, C01B21/08 take precedence) since 1980 +2 CPC IPC+CPC Available in IPC and CPC
C01B 21/20 Nitrogen oxides; Oxyacids of nitrogen; Salts thereof +2 CPC IPC+CPC Available in IPC and CPC