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1,1,1,2-TETRACHLORO-2,2-DIFLUOROETHANE
ICSC: 1420
Peer-Review Status: 27.11.2003 Validated
1,1-Difluoro-1,2,2,2-tetrachloroethane
CFC-112a 
CAS #: 76-11-9 RTECS #: KI1425000
EINECS #: 200-934-0
    Formula: C2Cl4F2 / ClF2CCCl3
Molecular mass: 203.8

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, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE      
Inhalation Cough. Sore throat. Laboured breathing. Shortness of breath. Irregular heartbeat. Confusion. Drowsiness. Unconciousness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. See Notes. 
Skin   Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes   Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.   
EC Classification
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  See Chemical Dangers. Well closed. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS-TO-WHITE SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on contact with hot surfaces or flames. This produces toxic fumes including hydrogen chloride, hydrogen fluoride and phosgene. Reacts with alkali metals, powdered aluminium, magnesium and zinc. Attacks plastics, rubber and coatings. 

Occupational exposure limits
TLV: 500ppm as TWA; (ACGIH 2003).
MAK: 1000 ppm, 8500 mg/m³; Peak limitation category: II(8); (DFG 2003). 

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour. 

Inhalation risk
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster. 

Effects of short-term exposure
Inhalation of of high levels may cause lung oedema. See Notes. The substance may cause effects on the cardiovascular system and central nervous system. This may result in cardiac disorders and central nervous system depression. Exposure could cause lowering of consciousness. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 91.5°C
Melting point: 40.6°C
Density (at 25°C): 1.65 g/cm³
Solubility in water: none
Vapour pressure, kPa at 20°C: 5.3
Relative vapour density (air = 1): 7.0
Octanol/water partition coefficient as log Pow: 3.41  
This substance may be hazardous to the environment. Special attention should be given to its impact on the ozone layer. 

NOTES
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort.
Rest and medical observation is therefore essential. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations