IPC Subgroup
C01B 21/2 Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
Introduced: September 1968
Last revised: January 2006
Full Title
Nitrogen; Compounds thereof > Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- INORGANIC CHEMISTRY
- Subclass:
- NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
Related Keywords
HYPONITROUS [acid]NITROGEN oxides
7 direct subcodes
Child Classifications
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- C01B 21/22 Nitrous oxide (NO)
- C01B 21/24 Nitric oxide (NO)
- C01B 21/34 Nitrogen trioxide (NO)
- C01B 21/36 Nitrogen dioxide (NO, NO)
- C01B 21/38 Nitric acid
- C01B 21/48 Methods for the preparation of nitrates in general
- C01B 21/5 Nitrous acid; Salts thereof