Difluoroethylene

Difluoroethylene
Product Details

Difluoroethylene

Product description

Vinylidene fluoride (VDF) is normally colorless, nontoxic, and flammable, and has slight smell of ether. It is one of important monomers of fluoro high polymer materials with common gender of olefin, and capable of polymerizing and copolymerizing. It is used for preparation of monomer or polymer and synthesis of intermediate Execution standard: Q/0321DYS 007-2010

Technical Index


≤ 

ltem

Unit

lndex



High-grade Product

First- grade Product

Qualified product

Appearance

∕ 

Colorless flammable gas, with slight smell of ether

Purity,≥ 

%

99.99

99.9

99.5

Moisture,≤ 

ppm

100

100

100

ppm

30

30

30


Acidity(based on HCL),≤ 

mg/kg

No

10

30

Physical and Chemical Properity



ltem

Unit

lndex

Chemical  Name

/

1.1-Difluoroethylene

C A S

/

75-38-7

Molecular Formula

/

CH₂=CF₂

Structural Formula

/

CH₂=CF₂

Molecular Weight

g/mol

64.0

Boiling Point (101.3Kpa)

℃ 

-85.7

Fusion Point

℃ 

-144

Critical Temperature

℃ 

29.7

Critical Pressure

Kpa

4458.3

Liquid Density (23.6℃)

g/ml

0.617

Steam Pressure (20℃)

Kpa

3594.33

Explosion Limit in Air (Volume)

%

5.5-21.3

Toxicity LC₅₀

ppm

128000

Danger Label

/

4(Flammable gas)


Application

Vinylidene fluoride (VDF), as important fluorine-containing monomer, com prepare polyvinylidene fluoride resin (PVDF) through single polymerization, and prepare F26 fluororubber through polymerizing with perfluoropropene, or F246 fluororubber by polymerizing with tetrafluoroethylene and perfluoropropene .It can also be used for preparing fluorine solfonic acid compounds as pesticide and special solvent

Packaging, Transportation and Storage

1.Vinylidene fluoride (VDF) must be stored in a tank with an interlayer which is charged with chilled saline, keeping the chilled saline supply without breakage.

2.Vinylidene fluoride (VDF) is forbidden charging into steel cylinders. If needing steel cylinders for packaging, it must use special steel cylinders made from low-temperature resistance materials.

3.Steel cylinders charged with vinylidene fluoride(VDF)should be equipped with safety caps that are tightly screwed in transportation, keeping from fire, Should utilize sunshade device when transported in summer, protecting it from exposure to sun ,The steel cylinders must be load and unloaded lightly, keeping from vibration and collision.




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