CPC Subgroup Additional Only
B01D 2257/40 Nitrogen compounds
Full Title
Components to be removed > Nitrogen compounds
4 direct subcodes
Child Classifications
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- B01D 2257/402 Dinitrogen oxide
- B01D 2257/404 Nitrogen oxides other than dinitrogen oxide
- B01D 2257/406 Ammonia
- B01D 2257/408 Cyanides, e.g. hydrogen cyanide (HCH)