NIOSH Pocket Guide to Chemical Hazards


CAS 460-19-5


RTECS GT1925000
Synonyms & Trade Names
Carbon nitride, Dicyan, Dicyanogen, Ethanedinitrile, Oxalonitrile
DOT ID & Guide
1026 119


NIOSH REL: TWA 10 ppm (20 mg/m3)
OSHA PEL†: none
IDLH N.D. See: IDLH INDEX Conversion 1 ppm = 2.13 mg/m3
Physical Description
Colorless gas with a pungent, almond-like odor. [Note: Shipped as a liquefied compressed gas. Forms cyanide in the body.]
MW: 52.0
BP: -6°F
FRZ: -18°F
Sol: 1%
VP(70°F): 5.1 atm
IP: 13.57 eV
RGasD: 1.82
Sp.Gr: 0.95 (Liquid at -6°F)
Fl.P: NA (Gas)
UEL: 32%
LEL: 6.6%

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.]
Measurement Methods
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Frostbite
Eyes: Prevent eye contact/Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash
First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support

Important additional information about respirator selection
Respirator Recommendations Not available.
Exposure Routes inhalation, skin and/or eye contact
Symptoms 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: frostbite
Target Organs Eyes, respiratory system, central nervous system, cardiovascular system