Difluoroethylene

Product Detail

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.