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VINYLIDENE FLUORIDE
(cylinder)
ICSC: 0687
Peer-Review Status: 10.08.1997 Validated
1,1-Difluoroethylene
1,1-Difluoroethene
R1132a
Vinylidene difluoride 
CAS #: 75-38-7 RTECS #: KW0560000
UN #: 1959
EINECS #: 200-867-7
    Formula: C2H2F2 / CH2=CF2
Molecular mass: 64.04

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.  Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with powder, carbon dioxide. 
EXPLOSION Gas/air mixtures are explosive. Explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding) if in liquid state. Use non-sparking handtools.  In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE      
Inhalation   Use ventilation.  Fresh air, rest. 
Skin ON CONTACT WITH LIQUID: FROSTBITE.  Cold-insulating gloves. Protective clothing.  ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention . 
Eyes   Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion      

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Ventilation. NEVER direct water jet on liquid. Personal protection: complete protective clothing including self-contained breathing apparatus.   
EC Classification
 
UN Classification
UN Hazard Class: 2.1 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-20S1959 or 20G2F-9.
NFPA Code: H1; F4; R2. 
Fireproof. Separated from incompatible materials. See Chemical Dangers. Store only if stabilized. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS COMPRESSED LIQUEFIED GAS WITH CHARACTERISTIC ODOUR. 

Physical dangers
The gas is heavier than air and may travel along the ground; distant ignition possible. The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen. As a result of flow, agitation, etc., electrostatic charges can be generated. 

Chemical dangers
The substance can form explosive peroxides. The substance may polymerize. This generates a large amount of heat; with fire or explosion hazard. Heating may cause violent combustion or explosion. Decomposes on heating and on burning. This produces toxic and corrosive fumes including hydrogen fluoride, fluorine and fluorides. Reacts violently with oxidants and many other materials. This generates fire and explosion hazard. 

Occupational exposure limits
TLV: 500ppm as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK: Carcinogen category: 3B; (DFG 2005). 

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
Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the central nervous system. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: -83°C
Melting point: -144°C
Relative density (water = 1): 0.6
Solubility in water: none
Relative vapour density (air = 1): 2.2
Flash point: Flammable gas
Auto-ignition temperature: 640°C
Explosive limits, vol% in air: 5.5-21.3
Octanol/water partition coefficient as log Pow: 1.24  
 

NOTES
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.
Check oxygen content before entering area.
Vapours are uninhibited and may form polymers in the vents or flame arresters causing blockage.
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Check for peroxides prior to distillation; eliminate if found.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Halocarbon 1132A is a trade name.
Also consult ICSC 0083 Vinylidene chloride.
Card has been partly updated in October 2005.
See sections Occupational Exposure Limits, Emergency Response. 

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
       Vinylidene Fluoride  (IARC Summary & Evaluation, Volume 39, 1986)
       Vinylidene Fluoride  (IARC Summary & Evaluation, Volume 71, 1999)