NIOSH Pocket Guide to Chemical Hazards

Carbonyl fluoride CAS 353-50-4
COF2 RTECS FG6125000
Synonyms & Trade Names
Carbon difluoride oxide, Carbon fluoride oxide, Carbon oxyfluoride, Carbonyl difluoride, Fluoroformyl fluoride, Fluorophosgene
DOT ID & Guide
2417 125
NIOSH REL: TWA 2 ppm (5 mg/m3) ST 5 ppm (15 mg/m3)
OSHA PEL†: none
IDLH N.D. Conversion 1 ppm = 2.70 mg/m3
Physical Description
Colorless gas with a pungent and very irritating odor. [Note: Shipped as a liquefied compressed gas.]
MW: 66.0
BP: -118°F
FRZ: -173°F
Sol: Reacts
VP: 55.4 atm
IP: 13.02 eV
RGasD: 2.29

Fl.P: NA

Nonflammable Gas
Incompatibilities & Reactivities
Heat, moisture, hexafluoroisopropyl-ideneamino-lithium [Note: Reacts with water to form hydrogen fluoride & carbon dioxide.]
Measurement Methods
None available
Personal Protection & Sanitation
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
Provide: Frostbite
First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support

Respirator Recommendations To be added later
Exposure Routes inhalation, skin and/or eye contact
Symptoms Irritation eyes, skin, mucous membrane, respiratory system; eye, skin burns; lacrimation (discharge of tears); cough, pulmonary edema, dyspnea (breathing difficulty); chronic exposure: gastrointestinal pain, muscle fibrosis, skeletal fluorosis; liquid: frostbite
Target Organs Eyes, skin, respiratory system, bone