What Is the Purpose of Cyanogen (CN)?

Cyanogen (CN)₂ is a toxic, pseudohalogen gas used primarily as a chemical intermediate in industrial synthesis:

• Hydrogen Cyanide (HCN) Production: Precursor for acrylonitrile (acrylic fibers, plastics), methyl methacrylate (PMMA), adiponitrile (nylon-6,6).
• Fumigant: Historically used for pest control in ships, grain silos, buildings (now restricted/replaced).
• Metal Processing: Case hardening (cyaniding) of steel; gold/silver extraction (cyanide leaching uses CN⁻, not (CN)₂ directly).
• Specialty Chemicals: Cyanogen chloride (CK) for tear gas; cyanuric acid (chlorine stabilizer); dyes, pharmaceuticals.
• Rocket Propellant Research: High-energy oxidizer (with ozone/fluorine) – experimental.

Safety: Extremely toxic (TLV 0.3 ppm); flammable; burns with hot pink flame. Requires specialized handling. Not a consumer product.