NIOSH logo and tagline

Chlorodifluoromethane

Related Pages
Synonyms & Trade Names
Difluorochloromethane, Fluorocarbon-22, Freon® 22, Genetron® 22, Monochlorodifluoromethane, Refrigerant 22
CAS No.
75-45-6
RTECS No.
PA6390000
DOT ID & Guide
1018 126
Formula
CHClF₂
Conversion
1 ppm = 3.54 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 1000 ppm (3500 mg/m3) ST 1250 ppm (4375 mg/m3)
OSHA PEL
none See Appendix G
Measurement Methods
NIOSH 1018
See: NMAM or OSHA Methods
Physical Description
Colorless gas with a faint, sweetish odor. [Note: Shipped as a liquefied compressed gas.]
Molecular Weight
86.5
Boiling Point
-41°F
Freezing Point
-231°F
Solubility
(77°F): 0.3%
Vapor Pressure
9.4 atm
Ionization Potential
12.45 eV
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Relative Gas Density
3.11
Nonflammable Gas
Incompatibilities & Reactivities
Alkalis, alkaline earth metals (e.g., powdered aluminum, sodium, potassium, zinc)
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
Personal Protection/Sanitation
(See protection codes)
Skin:Frostbite
Eyes:Frostbite
Wash skin:No recommendation
Remove:No recommendation
Change:No recommendation
Provide:Frostbite wash
First Aid
(See procedures)
Eye:Frostbite
Skin:Frostbite
Breathing:Respiratory support
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0049
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health