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CHLORODIFLUOROMETHANE

2.2 - Non-flammable, non-poisonous gas
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The Chemical Identifier fields include common identification numbers, the NFPA diamond, U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
CAS Number UN/NA Number
  • 75-45-6   (CHLORODIFLUOROMETHANE)
DOT Hazard Label USCG CHRIS Code
  • Non-Flammable Gas
NIOSH Pocket Guide International Chem Safety Card
Chlorodifluoromethaneexternal link
NFPA 704
data unavailable
General Description
Chlorodifluoromethane is a colorless gas with an ethereal odor. It is shipped as a liquefied gas under its own vapor pressure. It is noncombustible. It can asphyxiate by the displacement of air. Contact with the liquid can cause frostbite. Toxic gases can be produced in fires involving this material. Exposure of the container to prolonged heat or fire may cause it to rupture violently and rocket.

The Hazard fields include special hazard alerts, air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
none
Air & Water Reactions
The liquefied gas poured into water can be violently explosive. This is due to the phase transition from superheated liquid to vapor.
Fire Hazard
Special Hazards of Combustion Products: Decomposition gases are toxic and irritating. (USCG, 1999)
Health Hazard
Inhalation at greater than 10% concentration in air may cause narcosis. Liquid may cause frostbite. (USCG, 1999)
Reactivity Profile
CHLORODIFLUOROMETHANE is incompatible with the following: Alkalis, alkaline earth metals (e.g., powdered aluminum, sodium, potassium, zinc) (NIOSH, 2016).
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
Excerpt from ERG Guide 126 [Gases - Compressed or Liquefied (Including Refrigerant Gases)]:

As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions.

LARGE SPILL: Consider initial downwind evacuation for at least 500 meters (1/3 mile).

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)
Firefighting
Excerpt from ERG Guide 126 [Gases - Compressed or Liquefied (Including Refrigerant Gases)]:

Use extinguishing agent suitable for type of surrounding fire.

SMALL FIRE: Dry chemical or CO2.

LARGE FIRE: Water spray, fog or regular foam. Move containers from fire area if you can do it without risk. Damaged cylinders should be handled only by specialists.

FIRE INVOLVING TANKS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. Some of these materials, if spilled, may evaporate leaving a flammable residue. (ERG, 2016)
Non-Fire Response
Excerpt from ERG Guide 126 [Gases - Compressed or Liquefied (Including Refrigerant Gases)]:

Do not touch or walk through spilled material. Stop leak if you can do it without risk. Do not direct water at spill or source of leak. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Allow substance to evaporate. Ventilate the area. (ERG, 2016)
Protective Clothing
Skin: Wear appropriate personal protective clothing to prevent skin from becoming frozen from contact with the liquid or from contact with vessels containing the liquid.

Eyes: Wear appropriate eye protection to prevent eye contact with the liquid that could result in burns or tissue damage from frostbite.

Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).

Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.

Change: No recommendation is made specifying the need for the worker to change clothing after the work shift.

Provide: Quick drench facilities and/or eyewash fountains should be provided within the immediate work area for emergency use where there is any possibility of exposure to liquids that are extremely cold or rapidly evaporating. (NIOSH, 2016)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Eye: If eye tissue is frozen, seek medical attention immediately; if tissue is not frozen, immediately and thoroughly flush the eyes with large amounts of water for at least 15 minutes, occasionally lifting the lower and upper eyelids. If irritation, pain, swelling, lacrimation, or photophobia persist, get medical attention as soon as possible.

Skin: If frostbite has occurred, seek medical attention immediately; do NOT rub the affected areas or flush them with water. In order to prevent further tissue damage, do NOT attempt to remove frozen clothing from frostbitten areas. If frostbite has NOT occurred, immediately and thoroughly wash contaminated skin with soap and water.

Breathing: If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped, perform mouth-to-mouth resuscitation. Keep the affected person warm and at rest. Get medical attention as soon as possible. (NIOSH, 2016)

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds. The information in CAMEO Chemicals comes from a variety of data sources.
Chemical Formula:
  • CHClF2
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: Not flammable (USCG, 1999)
Melting Point: -231 ° F (NIOSH, 2016)
Vapor Pressure: 10991.42 mm Hg (USCG, 1999)
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 1.41 at -40 ° F (USCG, 1999)
Boiling Point: -40.9 ° F at 760 mm Hg (USCG, 1999)
Molecular Weight: 86.48 (USCG, 1999)
Water Solubility: 0.3 % at 77° F (NIOSH, 2016)
Ionization Potential: 12.45 eV (NIOSH, 2016)
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Chlorodifluoromethane; (Freon 22; CFC 22) (75-45-6) 1250 ppm 2400 ppm 14000 ppm
(DOE, 2016)

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Department of Homeland Security's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).

EPA Consolidated List of Lists

Regulatory Name CAS Number/
313 Category Code
EPCRA 302
EHS TPQ
EPCRA 304
EHS RQ
CERCLA RQ EPCRA 313
TRI
RCRA
Code
CAA 112(r)
RMP TQ
Chlorodifluoromethane 75-45-6 313
HCFC-22 75-45-6 X

(EPA List of Lists, 2015)

DHS Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

This section provides a listing of alternate names for this chemical, including trade names and synonyms.
  • ALGEON 22
  • ALGOFRENE 22
  • ALGOFRENE 6
  • ARCTON 22
  • ARCTON 4
  • CFC 22
  • CHLORODIFLUOROMETHANE
  • DAIFLON 22
  • DIFLUOROCHLOROMETHANE
  • DIFLUOROMONOCHLOROMETHANE
  • DYMEL 22
  • ELECTRO-CF 22
  • ESKIMON-22
  • F 22
  • F 22 (HALOCARBON)
  • FC 22
  • FKW 22
  • FLUGENE 22
  • FLUOROCARBON-22
  • FORANE 22
  • FREON 22
  • FREON-22
  • FREON® 22
  • FRIGEN 22
  • FRON 22
  • GENETRON 22
  • GENETRON® 22
  • HALTRON 22
  • HCFC 22
  • HCFC-22
  • HFA 22
  • ISCEON 22
  • ISOTRON 22
  • KHLADON 22
  • MONOCHLORODIFLUOROMETHANE
  • PROPELLANT 22
  • R 22
  • REFRIGERANT 22
  • REFRIGERANT GAS R-22
  • REFRIGERANT R 22
  • UCON 22
  • UCONN-22

Version 2.7.1 rev 1