# NIOSH Pocket Guide to Chemical Hazards
Chlorodifluoromethane | CAS 75-45-6
CHClF2 | RTECS PA6390000
Synonyms & Trade Names Difluorochloromethane, Fluorocarbon-22, Freon® 22, Genetron® 22, Monochlorodifluoromethane, Refrigerant 22 | DOT ID & Guide 1018 126
Exposure Limits | NIOSH REL: TWA 1000 ppm (3500 mg/m3) ST 1250 ppm (4375 mg/m3)
OSHA PEL†: none
IDLH N.D. See: IDLH INDEX | Conversion 1 ppm = 3.54 mg/m3
Physical Description Colorless gas with a faint, sweetish odor. [Note: Shipped as a liquefied compressed gas.]
MW: 86.5 | BP: -41°F | FRZ: -231°F | Sol(77°F): 0.3%
VP: 9.4 atm | IP: 12.45 eV | RGasD: 3.11 |
Fl.P: NA | UEL: NA | LEL: NA |
Nonflammable Gas
Incompatibilities & Reactivities Alkalis, alkaline earth metals (e.g., powdered aluminum, sodium, potassium, zinc)
Measurement Methods NIOSH 1018
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 (liquid)
Symptoms Irritation respiratory system; confusion, drowsiness, ringing in ears; heart palpitations, cardiac arrhythmias; asphyxia; liver, kidney, spleen injury; liquid: frostbite
Target Organs respiratory system, cardiovascular system, central nervous system, liver, kidneys, spleen
See also: INTRODUCTION