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DIBROMODIFLUOROMETHANE
ICSC: 1419
Peer-Review Status: 27.11.2003 Validated
Difluorodibromomethane
Fluorocarbon 12-B2 
CAS #: 75-61-6 RTECS #: PA7525000
UN #: 1941
EINECS #: 200-885-5
 		    Formula: CBr2F2
Molecular mass: 209.8

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. 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.   

SPILLAGE DISPOSAL
 		PACKAGING & LABELLING
Ventilation. Do NOT let this chemical enter the environment.   
EC Classification
 
UN Classification
UN Hazard Class: 9; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  See Chemical Dangers. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS GAS OR LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen. 

Chemical dangers
Decomposes on contact with hot surfaces or flames. This produces toxic and corrosive gases including hydrogen bromide and hydrogen fluoride. Reacts with alkali metals, powdered aluminium, magnesium and zinc. 

Occupational exposure limits
TLV: 100ppm as TWA; (ACGIH 2003).
MAK: 100 ppm, 870 mg/m³; Peak limitation category: II(2); (DFG 2003). 

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

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment. 

Effects of short-term exposure
The substance is irritating to the respiratory tract. Inhalation of high levels may cause lung oedema. See Notes. The substance may cause effects on the central nervous system. Exposure could cause lowering of consciousness. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 22.8°C
Melting point: -101.1°C
Density (gas): g/m³
Density (for liquid): 2.27 g/cm³
Solubility in water: none
Vapour pressure, kPa at 20°C: 83
Relative vapour density (air = 1): 7.2
Octanol/water partition coefficient as log Pow: 1.99   		This substance may be hazardous to the environment. Special attention should be given to its impact on the ozone layer. 

NOTES
Check oxygen content before entering area.
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.
Chlorofluorocarbons are known to cause effect on the cardiovascular system.
Freon 12-B2 and Halon 1202 are trade names. 

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