Division 4.2 Chemical symbols and abbreviations
C1 CH4 C2H6 C2H5OH C3H8 CO CO2 DOP H2O NH3 NMHC NOx NO NO2 N2O THC
Carbon 1 equivalent hydrocarbon
Methane
Ethane
Ethanol
Propane
Carbon monoxide
Carbon dioxide
Di-octylphthalate
Water
Ammonia
Non-methane hydrocarbons
Oxides of nitrogen
Nitric oxide
Nitrogen dioxide
Nitrous oxide
Total hydrocarbons