Cyanogen
Synonyms & Trade Names
Carbon nitride, Dicyan, Dicyanogen, Ethanedinitrile, OxalonitrilePhysical Description
Colorless gas with a pungent, almond-like odor. [Note: Shipped as a liquefied compressed gas. Forms cyanide in the body.]Molecular Weight
52.0Boiling Point
-6°FFreezing Point
-18°FSolubility
1%Vapor Pressure
(70°F): 5.1 atmIonization Potential
13.57 eVSpecific Gravity
0.95 (Liquid at -6°F)Flash Point
NA (Gas)Upper Exposive Limit
32%Lower Explosive Limit
6.6%Relative Gas Density
1.82
Flammable Gas
Incompatibilities & Reactivities
Acids, water, strong oxidizers (e.g., dichlorine oxide, fluorine) [Note: Slowly hydrolyzed in water to form hydrogen cyanide, oxalic acid, or ammonia.]Exposure Routes
inhalation, skin and/or eye contactSymptoms
irritation eyes, nose, upper respiratory system; lacrimation (discharge of tears); cherry red lips, tachypnea, hypernea, bradycardia; headache, convulsions; dizziness, loss of appetite, weight loss; liquid: frostbiteTarget Organs
Eyes, respiratory system, central nervous system, cardiovascular systemPersonal Protection/Sanitation
(See protection codes)Skin:Frostbite
Eyes:Prevent eye contact/Frostbite
Wash skin:No recommendation
Remove:When wet (flammable)
Change:No recommendation
Provide:Frostbite wash
Respirator Recommendations
Not available.
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division