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1,1-DIFLUOROETHANE
(cylinder)
ICSC: 1729
Peer-Review Status: 31.03.2009 Validated
Ethane, 1,1,-difluoro-
Ethylene fluoride
HFC-152a
Freon 152a 
CAS #: 75-37-6 RTECS #: KI1410000
UN #: 1030
EINECS #: 200-866-1
    Formula: C2H4F2
Atomic mass: 66.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames, NO sparks and NO smoking.  Use carbon dioxide, powder, water spray. 
EXPLOSION Gas/air mixtures are explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Use non-sparking handtools.  In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE      
Inhalation Dizziness. Drowsiness. Unconciousness. 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
PACKAGING & 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.   
EC Classification
 
UN Classification
UN Hazard Class: 2.1 
GHS Classification
Signal: Danger
Extremely flammable gas
Contains gas under pressure; may explode if heated 
flam;flamecylinder;gas

EMERGENCY RESPONSE SAFE STORAGE
  Fireproof. Separated from incompatible materials. Keep in a well-ventilated room. 

IMPORTANT DATA
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. 

Occupational exposure limits
TLV not established.
MAK (not established):. 

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

Inhalation risk
On loss of containment this substance can cause suffocation by lowering the oxygen content of the air 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. This may result in cardiac disorders. Exposure at high levels could cause unconsciousness. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
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  
 

NOTES
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Check oxygen content before entering the area.
Common name: Refrigerant gas R 152a. 

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