NIOSH Pocket Guide to Chemical Hazards

Dichlorotetrafluoroethane CAS 76-14-2
CClF2CClF2 RTECS KI1101000
Synonyms & Trade Names
1,2-Dichlorotetrafluoroethane; Freon® 114; Genetron® 114; Halon® 242; Refrigerant 114
DOT ID & Guide
1958 126
NIOSH REL: TWA 1000 ppm (7000 mg/m3)
OSHA PEL: TWA 1000 ppm (7000 mg/m3)
IDLH 15,000 ppm Conversion 1 ppm = 6.99 mg/m3
Physical Description
Colorless gas with a faint, ether-like odor at high concentrations. [Note: A liquid below 38°F. Shipped as a liquefied compressed gas.]
MW: 170.9
BP: 38°F
FRZ: -137°F
Sol: 0.01%
VP(70°F): 1.9 atm
IP: 12.20 eV
RGasD: 5.93

Fl.P: NA

Nonflammable Gas
Incompatibilities & Reactivities
Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc & magnesium; acids; acid fumes
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 NIOSH/OSHA
Up to 10,000 ppm: (APF = 10) Any supplied-air respirator
Up to 15,000 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure- demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin and/or eye contact (liquid)
Symptoms Irritation respiratory system; asphyxia; cardiac arrhythmias, cardiac arrest; liquid: frostbite
Target Organs respiratory system, cardiovascular system