International Chemical Safety Cards

CHLORODIFLUOROMETHANE ICSC: 0049

CHLORODIFLUOROMETHANE
Monochlorodifluoromethane
R 22
(cylinder)
CHClF2
Molecular mass: 86.5
CAS # 75-45-6
RTECS # PA6390000
ICSC # 0049
UN # 1018
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION Risk of fire and explosion (see Chemical Dangers).

In case of fire: keep cylinder cool by spraying with water.
EXPOSURE


  • INHALATION
    		• Confusion. Drowsiness. Unconsciousness.
    		Ventilation, local exhaust, or breathing protection.
    		Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
  • SKIN
    		• ON CONTACT WITH LIQUID: FROSTBITE.
    		Cold-insulating gloves.
    		ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.
  • EYES
    		• Redness. Pain.
    		Safety goggles.
    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION



    • SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Ventilation. NEVER direct water jet on liquid.
    		Separated from powdered metals such as aluminium and zinc. Cool. Ventilation along the floor.
    		Special insulated cylinder.
    UN Hazard Class: 2.2
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0049 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

    International Chemical Safety Cards

    CHLORODIFLUOROMETHANE ICSC: 0049

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    PHYSICAL STATE; APPEARANCE:
     COLOURLESS COMPRESSED LIQUEFIED GAS , WITH CHARACTERISTIC ODOUR.

    PHYSICAL DANGERS:
     The gas is heavier than air and may accumulate in low ceiling spaces causing deficiency of oxygen.

    CHEMICAL DANGERS:
     On contact with hot surfaces or flames this substance decomposes forming corrosive and very toxic fumes (hydrogen chloride, ICSC # 0163; phosgene, ICSC # 0007; chlorine, ICSC # 0126; hydrogen fluoride, ICSC # 0283). Reacts violently with powdered metals such as aluminium and zinc, causing fire and explosion hazard. Attacks magnesium and its alloys.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV (as TWA): 1000 ppm; 3540 mg/m3 (ACGIH 1992-1993).
    MAK: 500 ppm; 1800 mg/m3; IV, C (1992).
    OSHA PEL: none
    NIOSH REL: TWA 1000 ppm (3500 mg/m3) ST 1250 ppm (4375 mg/m3)
    NIOSH IDLH: No data


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation.

    INHALATION RISK:
     On loss of containment this gas can cause suffocation by lowering the oxygen content of the air in confined areas.

    EFFECTS OF SHORT-TERM EXPOSURE:
     The liquid may cause frostbite. Exposure could cause cardiac arrythmia and asphyxiation. See Notes.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    PHYSICAL
    PROPERTIES
    Boiling point: -41°C
    Melting point: -146°C
    Relative density (water = 1): 1.21
    Solubility in water, g/100 ml at 25°C: 0.3
    		Vapour pressure, kPa at 20°C: 908
    Relative vapour density (air = 1): 3.0
    Octanol/water partition coefficient as log Pow: 1.08
    ENVIRONMENTAL
    DATA
         		This substance may be hazardous to the environment; special attention should be given to the air.
    N O T E S
    To physicians: adrenergic agents are contraindicated. High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area. The odour warning when the exposure limit value is exceeded is insufficient. Do NOT use in the vicinity of a fire or a hot surface, or during welding. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. Freon 22, Frigen 22, Halon 22 are trade names.
    Transport Emergency Card: TEC (R)-20G08
    ADDITIONAL INFORMATION


    ICSC: 0049 CHLORODIFLUOROMETHANE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and IDLH values.