- H: 220Extremely flammable gas
- H: 280Contains gas under pressure; may explode if heated
- H: 319Causes serious eye irritation
- H: 330Fatal if inhaled.
- H: 335May cause respiratory irritation
- H: 410Very toxic to aquatic life with long lasting effects
- Carbon nitride
- Cyanogen
- Dicyan
- Dicyanogen
- Dikyan
- Ethanedinitrile
- Nitriloacetonitrile
- Oxalonitrile