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1,1-DIFLUOROETHANEICSC: 1729
HFC-152a
Freon 152a
Ethane, 1,1,-difluoro-
Ethylene fluoride
Refrigerant gas R 152a
March 2009
CAS #: 75-37-6
UN #: 1030
EC Number: 200-866-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Gas/air mixtures are explosive.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Use non-sparking handtools.  Use carbon dioxide, powder, water spray.  In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. 

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Dizziness. Drowsiness. Unconsciousness. Suffocation.  Use ventilation.  Fresh air, rest. 
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 See Skin.  Wear safety goggles or eye protection in combination with breathing protection.  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 CLASSIFICATION & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Ventilation. Remove vapour with fine water spray. NEVER direct water jet on liquid. 

According to UN GHS Criteria

flam;flamecylinder;gas
DANGER
Extremely flammable gas
Contains gas under pressure; may explode if heated 

Transportation
UN Classification
UN Hazard Class: 2.1 

STORAGE
Fireproof. Separated from incompatible materials. Keep in a well-ventilated room. 
PACKAGING
 
1,1-DIFLUOROETHANE ICSC: 1729
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS ODOURLESS COMPRESSED LIQUEFIED GAS. 

Physical dangers
The gas mixes well with air, explosive mixtures are easily formed. As a result of flow, agitation, etc., electrostatic charges can be generated. 

Chemical dangers
Decomposes rapidly on heating and on burning. This produces toxic and irritating fumes including hydrogen fluoride and carbon monoxide. Reacts with amines, reducing agents, strong oxidants and epoxides. 

Formula: C2H4F2
Atomic mass: 66.1
Boiling point: -24.7°C
Melting point: -117°C
Density (for liquid): 0.91 g/cm³
Density (at 0°C): 0.00304 g/cm³
Solubility in water, g/100ml at 25°C: 0.02 (very poor)
Vapour pressure, kPa at 20°C: 516
Relative vapour density (air = 1): 2.3
Flash point: Flammable gas
Auto-ignition temperature: 455°C
Explosive limits, vol% in air: 3.7-18
Octanol/water partition coefficient as log Pow: 0.75  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the cardiovascular system. This may result in cardiac disorders. Exposure at high levels could cause unconsciousness. 

Inhalation risk
On loss of containment this substance can cause suffocation by lowering the oxygen content of the air in confined areas. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
 

NOTES
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Check oxygen content before entering the area. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations