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NIOSH

VINYLIDENE FLUORIDE

ICSC: 0687

1,1-Difluoroethylene
1,1-Difluoroethene
R1132a
Vinylidene difluoride
C2H2F2 / CH2=CF2
Molecular mass: 64.04
(cylinder)
ICSC # 0687 		CAS # 75-38-7
RTECS # KW0560000
UN # 1959
August 10, 1997 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Extremely flammable. Explosive. 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.
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
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
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION


SPILLAGE DISPOSAL

STORAGE

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.
Fireproof. Separated from incompatible materials . See Chemical Dangers. Store only if stabilized.

UN Hazard Class: 2.1
ICSC: 0687 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

VINYLIDENE FLUORIDE

ICSC: 0687

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D

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A

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, and may accumulate in low ceiling spaces causing 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 releasing a large amount of heat, with fire or explosion hazard. Heating may cause violent combustion or explosion. The substance decomposes on heating or on burning producing toxic and corrosive fumesincludinghydrogen fluoride, fluorine and fluorides. Reacts violently with oxidants and many other materials, causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 500 ppm as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK:
Carcinogen category: 3B;
(DFG 2005).
OSHA PEL: none
NIOSH REL: TWA 1 ppm C 5 ppm use 1910.1017
NIOSH IDLH: N.D. See: IDLH INDEX


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

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

ENVIRONMENTAL
DATA


N O T E S

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.
Transport Emergency Card: TEC (R)-20S1959 or 20G2F-9

NFPA Code: H1; F4; R2;

ADDITIONAL INFORMATION



ICSC: 0687 VINYLIDENE FLUORIDE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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