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