CPC Subgroup
C01B 21/22 Nitrous oxide (N2O)
Full Title
Nitrogen; Compounds thereof > Nitrogen oxides; Oxyacids of nitrogen; Salts thereof > Nitrous oxide (N2O)
C01B 21/22 Nitrogen; Compounds thereof > Nitrogen oxides; Oxyacids of nitrogen; Salts thereof > Nitrous oxide (N2O)