NIOSH Pocket Guide to Chemical Hazards


CAS 75-69-4


RTECS PB6125000
Synonyms & Trade Names
Freon® 11; Monofluorotrichloromethane; Refrigerant 11; Trichlorofluoromethane; Trichloromonofluoromethane
DOT ID & Guide


NIOSH REL: C 1000 ppm (5600 mg/m3)
OSHA PEL†: TWA 1000 ppm (5600 mg/m3)
IDLH 2000 ppm See: 75694 Conversion 1 ppm = 5.62 mg/m3
Physical Description
Colorless to water-white, nearly odorless liquid or gas (above 75°F).
MW: 137.4
BP: 75°F
FRZ: -168°F
Sol(75°F): 0.1%
VP: 690 mmHg
IP: 11.77 eV
RGasD: 4.74
Sp.Gr: 1.47 (Liquid at 75°F)
Fl.P: NA

Noncombustible Liquid Nonflammable Gas
Incompatibilities & Reactivities
Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc, magnesium & lithium shavings; granular barium
Measurement Methods
NIOSH 1006
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: No recommendation
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash, Quick drench
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Important additional information about respirator selection
Respirator Recommendations NIOSH/OSHA
Up to 2000 ppm:
(APF = 10) Any supplied-air respirator
(APF = 50) Any self-contained breathing apparatus 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
(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, ingestion, skin and/or eye contact
Symptoms Incoordination, tremor; dermatitis; cardiac arrhythmias, cardiac arrest; asphyxia; liquid: frostbite
Target Organs Skin, respiratory system, cardiovascular system
See also: INTRODUCTION   See ICSC CARD: 0047   See MEDICAL TESTS: 0258