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Date of peer-review: March 2002
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| 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.
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In case of fire in the surroundings: use appropriate extinguishing media.
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| EXPLOSION |
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In case of fire: keep cylinder cool by spraying with water.
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| EXPOSURE |
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| Inhalation |
Cardiac arrhythmia. Confusion. Drowsiness. Unconsciousness.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
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| Skin |
ON CONTACT WITH LIQUID: FROSTBITE.
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Cold-insulating gloves.
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ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.
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| Eyes |
Redness. Pain.
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Safety goggles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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| Ingestion |
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Do not eat, drink, or smoke during work.
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| SPILLAGE DISPOSAL | PACKAGING & LABELLING | |||||||
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Ventilation.
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Special insulated cylinder. EU Classification UN Classification UN Hazard Class: 2.2 | |||||||
| EMERGENCY RESPONSE | STORAGE | |||||||
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Transport Emergency Card: TEC (R)-20G2A
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Separated from incompatible materials. See Chemical Dangers. Cool. Ventilation along the floor.
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| IMPORTANT DATA | |||
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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 toxic and corrosive gases (hydrogen chloride ICSC 0163, phosgene ICSC 0007, hydrogen fluoride ICSC 0283, carbonyl fluoride ICSC 0633). Reacts violently with metals such as zinc and powdered aluminium. Attacks magnesium and its alloys. OCCUPATIONAL EXPOSURE LIMITS: TLV: 1000 ppm as TWA A4 (ACGIH 2001). MAK: 1000 ppm; 5000 mg/m³; IV, C (DFG 2001). |
ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: On loss of containment this liquid evaporates very quickly displacing the air and causing a serious risk of suffocation when in confined areas. EFFECTS OF SHORT-TERM EXPOSURE: Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the cardiovascular system and central nervous system, resulting in cardiac disorders and central nervous system depression. Exposure could cause lowering of consciousness. See Notes. | ||
| PHYSICAL PROPERTIES | |||
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Boiling point: -30°C Melting point: -158°C Relative density (water = 1): 1.5 Solubility in water, g/100 ml at 20°C: 0.03 Vapour pressure, kPa at 20°C: 568 Relative vapour density (air = 1): 4.2 |
Octanol/water partition coefficient as log Pow: 2.16 | ||
| ENVIRONMENTAL DATA | |||
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This substance may be hazardous to the environment; special attention should be given to its impact on the ozone layer.
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| NOTES | |||
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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 12, Frigen 12, Halon 122 are trade names.
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| ADDITIONAL INFORMATION | |||
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| © IPCS, CEC 1999 | |||
See Also:
Toxicological Abbreviations
Dichlorodifluoromethane (WHO Food Additives Series 8)
DICHLORODIFLUOROMETHANE (JECFA Evaluation)