Simple cyanides (including sodium cyanide and other metal cyanide salts) are classified under 283711 or 283719 depending on whether they are sodium-based. Complex cyanides—coordination compounds where the cyanide ligand is bound to a central metal ion, such as potassium ferrocyanide—fall under 283720. The chemical structure and whether the cyanide is free or coordinated is the determining factor.

Yes. Cyanide compounds are classified as hazardous materials and require proper DOT hazmat labeling, shipping papers, and emergency response information. Importers may also need to comply with EPA Toxic Substances Control Act (TSCA) reporting requirements and should verify whether end-use restrictions or export controls apply in the country of origin.