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CAS No.: | 75-38-7 |
---|---|
Name: | 1,1-Difluoroethene |
Article Data: | 114 |
Molecular Structure: | |
Formula: | C2H2F2 |
Molecular Weight: | 64.0347 |
Synonyms: | Ethylene,1,1-difluoro- (8CI);1,1-Difluoroethene;1,1-Difluoroethylene;FC 1132a;Fluorovinylidene;Genetron 1132a;HFC 1132a;R 1132a;Vinylidene difluoride;Vinylidene fluoride; |
EINECS: | 200-867-7 |
Density: | 0.95 g/cm3 |
Melting Point: | -144 °C(lit.) |
Boiling Point: | -83 °C |
Flash Point: | <-60oC |
Solubility: | slightly soluble in water and soluble in alcohol and ether |
Appearance: | colorless gas |
Hazard Symbols: | F+,F |
Risk Codes: | 12 |
Safety: | 16-7/9 |
Transport Information: | UN 1959 |
PSA: | 0.00000 |
LogP: | 1.39660 |
β,β,β-trifluoroethyl phenyl sulfone
Vinylidene fluoride
Conditions | Yield |
---|---|
With chloro-trimethyl-silane; magnesium In N,N-dimethyl-formamide at 20℃; for 0.25h; | 100% |
1,1,2-trifluoro-2-(trifluoromethyl)cyclobutane
A
Vinylidene fluoride
B
2,3,3,3-tetrafluoro-propene
Conditions | Yield |
---|---|
at 800℃; for 7.83h; Inert atmosphere; | A 97% B 81% |
1-Chloro-2,2-difluoroethene
A
polytetrafluoroethylene
B
Vinylidene fluoride
C
1,1,2-trifluoroethylene
Conditions | Yield |
---|---|
With hydrogen sulfide Product distribution; Irradiation; added CH3OH or alone; | A 6% B 82% C 12% |
Conditions | Yield |
---|---|
With potassium phosphate; [(2,2''-bipyridine)Ni(CH2CF3)2] In 1,2-dimethoxyethane at 80℃; Suzuki Coupling; | A n/a B 57% C n/a |
methylene chloride
Octafluorocyclobutane
A
polytetrafluoroethylene
B
Vinylidene fluoride
Conditions | Yield |
---|---|
at 250 - 800℃; under 150.015 Torr; | A 56.2% B n/a |
Conditions | Yield |
---|---|
In diethyl ether -30°C; | 56% |
1-chloro-2,2-difluoroethane
A
Vinylidene fluoride
B
1,2-difluoroethene
C
1-chloro-2-fluoroethylene
Conditions | Yield |
---|---|
at 650℃; Activation energy; Product distribution; Further Variations:; Temperatures; | A 32% B 53% C 13% |
at 650℃; | A 32% B 53% C 13% |
methyl bromide
Chlorodifluoromethane
A
polytetrafluoroethylene
B
methylene chloride
C
methane
D
Vinylidene fluoride
Conditions | Yield |
---|---|
at 499.84 - 849.84℃; under 757.576 Torr; Further byproducts.; | A n/a B n/a C n/a D 53% |
perfluoro(N,N-dimethyl trifluorovinylamine)
A
trifluoromethan
B
Vinylidene fluoride
C
Hexafluoroethane
D
trifluoromethyl isocyanate
E
perfluoro(2-aza-1-hexene)
Conditions | Yield |
---|---|
With toluene pyrolysis 610°C, contact time 0.66 sec, further product; | A n/a B n/a C n/a D n/a E 46% |
With toluene pyrolysis 610°C, contact time 0.66 sec, further product; | A n/a B n/a C n/a D n/a E 46% |
methane
Octafluorocyclobutane
A
polytetrafluoroethylene
B
perfluoropropylene
C
Vinylidene fluoride
D
2,3,3,3-tetrafluoro-propene
E
1,1,2-trifluoroethylene
Conditions | Yield |
---|---|
at 250 - 800℃; under 150.015 Torr; for 0.000175h; Temperature; | A 45.8% B 7.4% C 10.4% D 8.4% E 9.5% |
The Vinylidene fluoride, with the CAS registry number 75-38-7 and EINECS registry number 200-867-7, has the systematic name of 1,1-difluoroethene. It is a colorless gas, and bleongs to the following product categories: CFC; Refrigerants; Organics. It is slightly soluble in water and soluble in alcohol and ether. And the molecular formula of this chemical is C2H2F2.
The physical properties of Vinylidene fluoride are as following: (1)ACD/LogP: 1.25; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.25; (4)ACD/LogD (pH 7.4): 1.25; (5)ACD/BCF (pH 5.5): 5.24; (6)ACD/BCF (pH 7.4): 5.24; (7)ACD/KOC (pH 5.5): 113.84; (8)ACD/KOC (pH 7.4): 113.84; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: Å2; (13)Index of Refraction: 1.264; (14)Molar Refractivity: 11.21 cm3; (15)Molar Volume: 67.3 cm3; (16)Polarizability: 4.44×10-24cm3; (17)Surface Tension: 8.7 dyne/cm; (18)Density: 0.95 g/cm3.
Preparation and uses of Vinylidene fluoride: Dry acetylene reacts with hydrofluoric acid in the presence of fluosulfonic acid, and gives 1,1-difluoroethane. Then mix with a certain amount of chlorine in the temperaure of 650-680 °C. Through a series of pyrogenation, you can get the vinylidene fluoride. In addition, it is usually used to produce polyvinylidene fluoride(PVDF), a kind of irradiation resistance material. It is also used as raw material of fluor resin and fluorubber.
You should be cautious while dealing with this chemical. It is a kind of extremely flammable chemical. Therefore, you had better take the following instructions: Keep away from sources of ignition - No smoking; Keep container tightly closed and in a well-ventilated place.
You can still convert the following datas into molecular structure:
(1)SMILES: C=C(F)F
(2)InChI: InChI=1/C2H2F2/c1-2(3)4/h1H2
(3)InChIKey: BQCIDUSAKPWEOX-UHFFFAOYAV
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
guinea pig | LCLo | inhalation | 800ppb/4H (0.8ppm) | National Technical Information Service. Vol. OTS0523847, | |
rat | LCLo | inhalation | 128000ppm/4H (128000ppm) | LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES | Journal of Occupational Medicine. Vol. 4, Pg. 262, 1962. |