# 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
Exposure Limits | 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 | UEL: NA | LEL: 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
See also: INTRODUCTION